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Finding the Fourth Proportional to 3,898.87, 5,869.37 and 3,559.88

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Solution

The fourth proportional to 3,898.87, 5,869.37 and 3,559.88 is: 5,359.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.87 : 5,869.37 = 3,559.88 : x
  2. Step 2: Convert to fraction form
    3,898.87/5,869.37 = 3,559.88/x
  3. Step 3: Cross multiply
    3,898.87x = 5,869.37 × 3,559.88
  4. Step 4: Simplify right side
    3,898.87x = 20,894,276.45
  5. Step 5: Solve for x
    x = 20,894,276.45/3,898.87
  6. Step 6: Final answer
    x = 5,359.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.