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Finding the Fourth Proportional to 5,255.87, 7,882.05 and 4,087.18

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Solution

The fourth proportional to 5,255.87, 7,882.05 and 4,087.18 is: 6,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,255.87 : 7,882.05 = 4,087.18 : x
  2. Step 2: Convert to fraction form
    5,255.87/7,882.05 = 4,087.18/x
  3. Step 3: Cross multiply
    5,255.87x = 7,882.05 × 4,087.18
  4. Step 4: Simplify right side
    5,255.87x = 32,215,317.71
  5. Step 5: Solve for x
    x = 32,215,317.71/5,255.87
  6. Step 6: Final answer
    x = 6,129.40

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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.