Home / 2,480.80-3,422.10-1,432.68

Finding the Fourth Proportional to 2,480.80, 3,422.10 and 1,432.68

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Solution

The fourth proportional to 2,480.80, 3,422.10 and 1,432.68 is: 1,976.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.80 : 3,422.10 = 1,432.68 : x
  2. Step 2: Convert to fraction form
    2,480.80/3,422.10 = 1,432.68/x
  3. Step 3: Cross multiply
    2,480.80x = 3,422.10 × 1,432.68
  4. Step 4: Simplify right side
    2,480.80x = 4,902,774.23
  5. Step 5: Solve for x
    x = 4,902,774.23/2,480.80
  6. Step 6: Final answer
    x = 1,976.29

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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.