Home / 2,239.11-3,085.61-1,680.21

Finding the Fourth Proportional to 2,239.11, 3,085.61 and 1,680.21

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Solution

The fourth proportional to 2,239.11, 3,085.61 and 1,680.21 is: 2,315.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.11 : 3,085.61 = 1,680.21 : x
  2. Step 2: Convert to fraction form
    2,239.11/3,085.61 = 1,680.21/x
  3. Step 3: Cross multiply
    2,239.11x = 3,085.61 × 1,680.21
  4. Step 4: Simplify right side
    2,239.11x = 5,184,464.38
  5. Step 5: Solve for x
    x = 5,184,464.38/2,239.11
  6. Step 6: Final answer
    x = 2,315.41

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,240.11, 3,086.98 and 1,681.21
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.