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Finding the Fourth Proportional to 8,972.86, 13,440.06 and 7,299.04

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Solution

The fourth proportional to 8,972.86, 13,440.06 and 7,299.04 is: 10,932.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.86 : 13,440.06 = 7,299.04 : x
  2. Step 2: Convert to fraction form
    8,972.86/13,440.06 = 7,299.04/x
  3. Step 3: Cross multiply
    8,972.86x = 13,440.06 × 7,299.04
  4. Step 4: Simplify right side
    8,972.86x = 98,099,535.54
  5. Step 5: Solve for x
    x = 98,099,535.54/8,972.86
  6. Step 6: Final answer
    x = 10,932.92

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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.