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Finding the Fourth Proportional to 6,616.68, 9,132.87 and 4,257.96

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Solution

The fourth proportional to 6,616.68, 9,132.87 and 4,257.96 is: 5,877.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,616.68 : 9,132.87 = 4,257.96 : x
  2. Step 2: Convert to fraction form
    6,616.68/9,132.87 = 4,257.96/x
  3. Step 3: Cross multiply
    6,616.68x = 9,132.87 × 4,257.96
  4. Step 4: Simplify right side
    6,616.68x = 38,887,395.15
  5. Step 5: Solve for x
    x = 38,887,395.15/6,616.68
  6. Step 6: Final answer
    x = 5,877.18

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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.