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Finding the Fourth Proportional to 8,871.61, 12,247.92 and 5,891.53

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Solution

The fourth proportional to 8,871.61, 12,247.92 and 5,891.53 is: 8,133.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.61 : 12,247.92 = 5,891.53 : x
  2. Step 2: Convert to fraction form
    8,871.61/12,247.92 = 5,891.53/x
  3. Step 3: Cross multiply
    8,871.61x = 12,247.92 × 5,891.53
  4. Step 4: Simplify right side
    8,871.61x = 72,158,988.12
  5. Step 5: Solve for x
    x = 72,158,988.12/8,871.61
  6. Step 6: Final answer
    x = 8,133.70

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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.