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Finding the Fourth Proportional to 8,655.33, 12,974.17 and 3,972.12

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Solution

The fourth proportional to 8,655.33, 12,974.17 and 3,972.12 is: 5,954.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.33 : 12,974.17 = 3,972.12 : x
  2. Step 2: Convert to fraction form
    8,655.33/12,974.17 = 3,972.12/x
  3. Step 3: Cross multiply
    8,655.33x = 12,974.17 × 3,972.12
  4. Step 4: Simplify right side
    8,655.33x = 51,534,960.14
  5. Step 5: Solve for x
    x = 51,534,960.14/8,655.33
  6. Step 6: Final answer
    x = 5,954.13

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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.