Home / 3,898.52-5,377.96-2,639.62

Finding the Fourth Proportional to 3,898.52, 5,377.96 and 2,639.62

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Solution

The fourth proportional to 3,898.52, 5,377.96 and 2,639.62 is: 3,641.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.52 : 5,377.96 = 2,639.62 : x
  2. Step 2: Convert to fraction form
    3,898.52/5,377.96 = 2,639.62/x
  3. Step 3: Cross multiply
    3,898.52x = 5,377.96 × 2,639.62
  4. Step 4: Simplify right side
    3,898.52x = 14,195,770.78
  5. Step 5: Solve for x
    x = 14,195,770.78/3,898.52
  6. Step 6: Final answer
    x = 3,641.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.