Home / 5,118.21-7,062.66-2,880.18

Finding the Fourth Proportional to 5,118.21, 7,062.66 and 2,880.18

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Solution

The fourth proportional to 5,118.21, 7,062.66 and 2,880.18 is: 3,974.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.21 : 7,062.66 = 2,880.18 : x
  2. Step 2: Convert to fraction form
    5,118.21/7,062.66 = 2,880.18/x
  3. Step 3: Cross multiply
    5,118.21x = 7,062.66 × 2,880.18
  4. Step 4: Simplify right side
    5,118.21x = 20,341,732.08
  5. Step 5: Solve for x
    x = 20,341,732.08/5,118.21
  6. Step 6: Final answer
    x = 3,974.38

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Half scale
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Double scale
Find fourth proportional to 5,119.21, 7,064.04 and 2,881.18
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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.