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Finding the Fourth Proportional to 8,806.43, 13,209.65 and 5,342.87

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Solution

The fourth proportional to 8,806.43, 13,209.65 and 5,342.87 is: 8,014.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806.43 : 13,209.65 = 5,342.87 : x
  2. Step 2: Convert to fraction form
    8,806.43/13,209.65 = 5,342.87/x
  3. Step 3: Cross multiply
    8,806.43x = 13,209.65 × 5,342.87
  4. Step 4: Simplify right side
    8,806.43x = 70,577,442.70
  5. Step 5: Solve for x
    x = 70,577,442.70/8,806.43
  6. Step 6: Final answer
    x = 8,014.31

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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.