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Finding the Fourth Proportional to 8,006.40, 11,044.80 and 5,353.92

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Solution

The fourth proportional to 8,006.40, 11,044.80 and 5,353.92 is: 7,385.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,006.40 : 11,044.80 = 5,353.92 : x
  2. Step 2: Convert to fraction form
    8,006.40/11,044.80 = 5,353.92/x
  3. Step 3: Cross multiply
    8,006.40x = 11,044.80 × 5,353.92
  4. Step 4: Simplify right side
    8,006.40x = 59,132,975.62
  5. Step 5: Solve for x
    x = 59,132,975.62/8,006.40
  6. Step 6: Final answer
    x = 7,385.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.