Home / 2,432.64-3,645.68-1,279.20

Finding the Fourth Proportional to 2,432.64, 3,645.68 and 1,279.20

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Solution

The fourth proportional to 2,432.64, 3,645.68 and 1,279.20 is: 1,917.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,432.64 : 3,645.68 = 1,279.20 : x
  2. Step 2: Convert to fraction form
    2,432.64/3,645.68 = 1,279.20/x
  3. Step 3: Cross multiply
    2,432.64x = 3,645.68 × 1,279.20
  4. Step 4: Simplify right side
    2,432.64x = 4,663,553.86
  5. Step 5: Solve for x
    x = 4,663,553.86/2,432.64
  6. Step 6: Final answer
    x = 1,917.08

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1.5x scale

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.