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Finding the Fourth Proportional to 8,984.70, 13,473.36 and 3,139.92

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Solution

The fourth proportional to 8,984.70, 13,473.36 and 3,139.92 is: 4,708.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,984.70 : 13,473.36 = 3,139.92 : x
  2. Step 2: Convert to fraction form
    8,984.70/13,473.36 = 3,139.92/x
  3. Step 3: Cross multiply
    8,984.70x = 13,473.36 × 3,139.92
  4. Step 4: Simplify right side
    8,984.70x = 42,305,272.53
  5. Step 5: Solve for x
    x = 42,305,272.53/8,984.70
  6. Step 6: Final answer
    x = 4,708.59

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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.