Home / 3,143.21-4,336.11-2,080.71

Finding the Fourth Proportional to 3,143.21, 4,336.11 and 2,080.71

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Solution

The fourth proportional to 3,143.21, 4,336.11 and 2,080.71 is: 2,870.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.21 : 4,336.11 = 2,080.71 : x
  2. Step 2: Convert to fraction form
    3,143.21/4,336.11 = 2,080.71/x
  3. Step 3: Cross multiply
    3,143.21x = 4,336.11 × 2,080.71
  4. Step 4: Simplify right side
    3,143.21x = 9,022,187.44
  5. Step 5: Solve for x
    x = 9,022,187.44/3,143.21
  6. Step 6: Final answer
    x = 2,870.38

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Find fourth proportional to 1,571.60, 2,168.06 and 1,040.36
Half scale
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Double scale
Find fourth proportional to 3,144.21, 4,337.49 and 2,081.71
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.