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Finding the Fourth Proportional to 8,860.52, 13,290.80 and 8,319.24

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Solution

The fourth proportional to 8,860.52, 13,290.80 and 8,319.24 is: 12,478.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.52 : 13,290.80 = 8,319.24 : x
  2. Step 2: Convert to fraction form
    8,860.52/13,290.80 = 8,319.24/x
  3. Step 3: Cross multiply
    8,860.52x = 13,290.80 × 8,319.24
  4. Step 4: Simplify right side
    8,860.52x = 110,569,344.59
  5. Step 5: Solve for x
    x = 110,569,344.59/8,860.52
  6. Step 6: Final answer
    x = 12,478.87

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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.