Home / 1,432.14-2,143.89-814.74

Finding the Fourth Proportional to 1,432.14, 2,143.89 and 814.74

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Solution

The fourth proportional to 1,432.14, 2,143.89 and 814.74 is: 1,219.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.14 : 2,143.89 = 814.74 : x
  2. Step 2: Convert to fraction form
    1,432.14/2,143.89 = 814.74/x
  3. Step 3: Cross multiply
    1,432.14x = 2,143.89 × 814.74
  4. Step 4: Simplify right side
    1,432.14x = 1,746,712.94
  5. Step 5: Solve for x
    x = 1,746,712.94/1,432.14
  6. Step 6: Final answer
    x = 1,219.65

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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.