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Finding the Fourth Proportional to 6,613.92, 9,920.47 and 2,718.22

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Solution

The fourth proportional to 6,613.92, 9,920.47 and 2,718.22 is: 4,077.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.92 : 9,920.47 = 2,718.22 : x
  2. Step 2: Convert to fraction form
    6,613.92/9,920.47 = 2,718.22/x
  3. Step 3: Cross multiply
    6,613.92x = 9,920.47 × 2,718.22
  4. Step 4: Simplify right side
    6,613.92x = 26,966,019.96
  5. Step 5: Solve for x
    x = 26,966,019.96/6,613.92
  6. Step 6: Final answer
    x = 4,077.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.