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Finding the Fourth Proportional to 8,706.68, 13,061.66 and 3,963.21

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Solution

The fourth proportional to 8,706.68, 13,061.66 and 3,963.21 is: 5,945.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.68 : 13,061.66 = 3,963.21 : x
  2. Step 2: Convert to fraction form
    8,706.68/13,061.66 = 3,963.21/x
  3. Step 3: Cross multiply
    8,706.68x = 13,061.66 × 3,963.21
  4. Step 4: Simplify right side
    8,706.68x = 51,766,066.72
  5. Step 5: Solve for x
    x = 51,766,066.72/8,706.68
  6. Step 6: Final answer
    x = 5,945.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.