Home / 2,480.38-3,423-1,432.42

Finding the Fourth Proportional to 2,480.38, 3,423 and 1,432.42

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Solution

The fourth proportional to 2,480.38, 3,423 and 1,432.42 is: 1,976.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.38 : 3,423 = 1,432.42 : x
  2. Step 2: Convert to fraction form
    2,480.38/3,423 = 1,432.42/x
  3. Step 3: Cross multiply
    2,480.38x = 3,423 × 1,432.42
  4. Step 4: Simplify right side
    2,480.38x = 4,903,173.66
  5. Step 5: Solve for x
    x = 4,903,173.66/2,480.38
  6. Step 6: Final answer
    x = 1,976.78

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1.5x scale

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.