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Finding the Fourth Proportional to 8,740.62, 12,061.62 and 4,761.49

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Solution

The fourth proportional to 8,740.62, 12,061.62 and 4,761.49 is: 6,570.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,740.62 : 12,061.62 = 4,761.49 : x
  2. Step 2: Convert to fraction form
    8,740.62/12,061.62 = 4,761.49/x
  3. Step 3: Cross multiply
    8,740.62x = 12,061.62 × 4,761.49
  4. Step 4: Simplify right side
    8,740.62x = 57,431,283.01
  5. Step 5: Solve for x
    x = 57,431,283.01/8,740.62
  6. Step 6: Final answer
    x = 6,570.62

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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.