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Finding the Fourth Proportional to 7,691.68, 10,568.48 and 6,117.04

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Solution

The fourth proportional to 7,691.68, 10,568.48 and 6,117.04 is: 8,404.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.68 : 10,568.48 = 6,117.04 : x
  2. Step 2: Convert to fraction form
    7,691.68/10,568.48 = 6,117.04/x
  3. Step 3: Cross multiply
    7,691.68x = 10,568.48 × 6,117.04
  4. Step 4: Simplify right side
    7,691.68x = 64,647,814.90
  5. Step 5: Solve for x
    x = 64,647,814.90/7,691.68
  6. Step 6: Final answer
    x = 8,404.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.