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Finding the Fourth Proportional to 6,624.88, 9,142.08 and 3,640.72

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Solution

The fourth proportional to 6,624.88, 9,142.08 and 3,640.72 is: 5,024.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,624.88 : 9,142.08 = 3,640.72 : x
  2. Step 2: Convert to fraction form
    6,624.88/9,142.08 = 3,640.72/x
  3. Step 3: Cross multiply
    6,624.88x = 9,142.08 × 3,640.72
  4. Step 4: Simplify right side
    6,624.88x = 33,283,753.50
  5. Step 5: Solve for x
    x = 33,283,753.50/6,624.88
  6. Step 6: Final answer
    x = 5,024.05

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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.