Home / 6,613.85-9,127.38-3,781.69

Finding the Fourth Proportional to 6,613.85, 9,127.38 and 3,781.69

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Solution

The fourth proportional to 6,613.85, 9,127.38 and 3,781.69 is: 5,218.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.85 : 9,127.38 = 3,781.69 : x
  2. Step 2: Convert to fraction form
    6,613.85/9,127.38 = 3,781.69/x
  3. Step 3: Cross multiply
    6,613.85x = 9,127.38 × 3,781.69
  4. Step 4: Simplify right side
    6,613.85x = 34,516,913.04
  5. Step 5: Solve for x
    x = 34,516,913.04/6,613.85
  6. Step 6: Final answer
    x = 5,218.88

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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.