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Finding the Fourth Proportional to 8,981.97, 13,472.97 and 3,137.22

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Solution

The fourth proportional to 8,981.97, 13,472.97 and 3,137.22 is: 4,705.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.97 : 13,472.97 = 3,137.22 : x
  2. Step 2: Convert to fraction form
    8,981.97/13,472.97 = 3,137.22/x
  3. Step 3: Cross multiply
    8,981.97x = 13,472.97 × 3,137.22
  4. Step 4: Simplify right side
    8,981.97x = 42,267,670.94
  5. Step 5: Solve for x
    x = 42,267,670.94/8,981.97
  6. Step 6: Final answer
    x = 4,705.84

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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.