Home / 3,125.12-4,315.20-2,132.48

Finding the Fourth Proportional to 3,125.12, 4,315.20 and 2,132.48

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Solution

The fourth proportional to 3,125.12, 4,315.20 and 2,132.48 is: 2,944.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.12 : 4,315.20 = 2,132.48 : x
  2. Step 2: Convert to fraction form
    3,125.12/4,315.20 = 2,132.48/x
  3. Step 3: Cross multiply
    3,125.12x = 4,315.20 × 2,132.48
  4. Step 4: Simplify right side
    3,125.12x = 9,202,077.70
  5. Step 5: Solve for x
    x = 9,202,077.70/3,125.12
  6. Step 6: Final answer
    x = 2,944.55

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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.