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Finding the Fourth Proportional to 8,381.97, 12,572.98 and 2,538.63

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Solution

The fourth proportional to 8,381.97, 12,572.98 and 2,538.63 is: 3,807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,381.97 : 12,572.98 = 2,538.63 : x
  2. Step 2: Convert to fraction form
    8,381.97/12,572.98 = 2,538.63/x
  3. Step 3: Cross multiply
    8,381.97x = 12,572.98 × 2,538.63
  4. Step 4: Simplify right side
    8,381.97x = 31,918,137.87
  5. Step 5: Solve for x
    x = 31,918,137.87/8,381.97
  6. Step 6: Final answer
    x = 3,807.95

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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.