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Finding the Fourth Proportional to 8,987.64, 12,404.52 and 6,760.68

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Solution

The fourth proportional to 8,987.64, 12,404.52 and 6,760.68 is: 9,330.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.64 : 12,404.52 = 6,760.68 : x
  2. Step 2: Convert to fraction form
    8,987.64/12,404.52 = 6,760.68/x
  3. Step 3: Cross multiply
    8,987.64x = 12,404.52 × 6,760.68
  4. Step 4: Simplify right side
    8,987.64x = 83,862,990.27
  5. Step 5: Solve for x
    x = 83,862,990.27/8,987.64
  6. Step 6: Final answer
    x = 9,330.92

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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.