Home / 2,082.60-3,124.51-621.80

Finding the Fourth Proportional to 2,082.60, 3,124.51 and 621.80

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Solution

The fourth proportional to 2,082.60, 3,124.51 and 621.80 is: 932.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.60 : 3,124.51 = 621.80 : x
  2. Step 2: Convert to fraction form
    2,082.60/3,124.51 = 621.80/x
  3. Step 3: Cross multiply
    2,082.60x = 3,124.51 × 621.80
  4. Step 4: Simplify right side
    2,082.60x = 1,942,820.32
  5. Step 5: Solve for x
    x = 1,942,820.32/2,082.60
  6. Step 6: Final answer
    x = 932.88

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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.