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Finding the Fourth Proportional to 8,909.28, 13,364.28 and 3,714.48

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Solution

The fourth proportional to 8,909.28, 13,364.28 and 3,714.48 is: 5,571.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.28 : 13,364.28 = 3,714.48 : x
  2. Step 2: Convert to fraction form
    8,909.28/13,364.28 = 3,714.48/x
  3. Step 3: Cross multiply
    8,909.28x = 13,364.28 × 3,714.48
  4. Step 4: Simplify right side
    8,909.28x = 49,641,350.77
  5. Step 5: Solve for x
    x = 49,641,350.77/8,909.28
  6. Step 6: Final answer
    x = 5,571.87

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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.