Home / 6,291.20-9,436.80-5,780.92

Finding the Fourth Proportional to 6,291.20, 9,436.80 and 5,780.92

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Solution

The fourth proportional to 6,291.20, 9,436.80 and 5,780.92 is: 8,671.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291.20 : 9,436.80 = 5,780.92 : x
  2. Step 2: Convert to fraction form
    6,291.20/9,436.80 = 5,780.92/x
  3. Step 3: Cross multiply
    6,291.20x = 9,436.80 × 5,780.92
  4. Step 4: Simplify right side
    6,291.20x = 54,553,385.86
  5. Step 5: Solve for x
    x = 54,553,385.86/6,291.20
  6. Step 6: Final answer
    x = 8,671.38

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Similar ratio
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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.