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Finding the Fourth Proportional to 5,724.40, 8,586.60 and 2,605.90

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Solution

The fourth proportional to 5,724.40, 8,586.60 and 2,605.90 is: 3,908.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,724.40 : 8,586.60 = 2,605.90 : x
  2. Step 2: Convert to fraction form
    5,724.40/8,586.60 = 2,605.90/x
  3. Step 3: Cross multiply
    5,724.40x = 8,586.60 × 2,605.90
  4. Step 4: Simplify right side
    5,724.40x = 22,375,820.94
  5. Step 5: Solve for x
    x = 22,375,820.94/5,724.40
  6. Step 6: Final answer
    x = 3,908.85

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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.