Home / 3,432.39-5,145.75-1,581.95

Finding the Fourth Proportional to 3,432.39, 5,145.75 and 1,581.95

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Solution

The fourth proportional to 3,432.39, 5,145.75 and 1,581.95 is: 2,371.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,432.39 : 5,145.75 = 1,581.95 : x
  2. Step 2: Convert to fraction form
    3,432.39/5,145.75 = 1,581.95/x
  3. Step 3: Cross multiply
    3,432.39x = 5,145.75 × 1,581.95
  4. Step 4: Simplify right side
    3,432.39x = 8,140,319.21
  5. Step 5: Solve for x
    x = 8,140,319.21/3,432.39
  6. Step 6: Final answer
    x = 2,371.62

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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.