Home / 1,432.24-2,147.90-458.11

Finding the Fourth Proportional to 1,432.24, 2,147.90 and 458.11

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Solution

The fourth proportional to 1,432.24, 2,147.90 and 458.11 is: 687.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.24 : 2,147.90 = 458.11 : x
  2. Step 2: Convert to fraction form
    1,432.24/2,147.90 = 458.11/x
  3. Step 3: Cross multiply
    1,432.24x = 2,147.90 × 458.11
  4. Step 4: Simplify right side
    1,432.24x = 983,974.47
  5. Step 5: Solve for x
    x = 983,974.47/1,432.24
  6. Step 6: Final answer
    x = 687.02

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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.