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Finding the Fourth Proportional to 5,358.87, 8,041.37 and 3,171.87

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Solution

The fourth proportional to 5,358.87, 8,041.37 and 3,171.87 is: 4,759.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,358.87 : 8,041.37 = 3,171.87 : x
  2. Step 2: Convert to fraction form
    5,358.87/8,041.37 = 3,171.87/x
  3. Step 3: Cross multiply
    5,358.87x = 8,041.37 × 3,171.87
  4. Step 4: Simplify right side
    5,358.87x = 25,506,164.40
  5. Step 5: Solve for x
    x = 25,506,164.40/5,358.87
  6. Step 6: Final answer
    x = 4,759.62

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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.