Home / 2,082.58-3,123.88-621.70

Finding the Fourth Proportional to 2,082.58, 3,123.88 and 621.70

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Solution

The fourth proportional to 2,082.58, 3,123.88 and 621.70 is: 932.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.58 : 3,123.88 = 621.70 : x
  2. Step 2: Convert to fraction form
    2,082.58/3,123.88 = 621.70/x
  3. Step 3: Cross multiply
    2,082.58x = 3,123.88 × 621.70
  4. Step 4: Simplify right side
    2,082.58x = 1,942,116.20
  5. Step 5: Solve for x
    x = 1,942,116.20/2,082.58
  6. Step 6: Final answer
    x = 932.55

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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.