Home / 5,705.20-8,557.79-2,147.98

Finding the Fourth Proportional to 5,705.20, 8,557.79 and 2,147.98

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Solution

The fourth proportional to 5,705.20, 8,557.79 and 2,147.98 is: 3,221.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,705.20 : 8,557.79 = 2,147.98 : x
  2. Step 2: Convert to fraction form
    5,705.20/8,557.79 = 2,147.98/x
  3. Step 3: Cross multiply
    5,705.20x = 8,557.79 × 2,147.98
  4. Step 4: Simplify right side
    5,705.20x = 18,381,987.87
  5. Step 5: Solve for x
    x = 18,381,987.87/5,705.20
  6. Step 6: Final answer
    x = 3,221.97

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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.