Home / 2,082.61-3,123.46-621.57

Finding the Fourth Proportional to 2,082.61, 3,123.46 and 621.57

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Solution

The fourth proportional to 2,082.61, 3,123.46 and 621.57 is: 932.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.61 : 3,123.46 = 621.57 : x
  2. Step 2: Convert to fraction form
    2,082.61/3,123.46 = 621.57/x
  3. Step 3: Cross multiply
    2,082.61x = 3,123.46 × 621.57
  4. Step 4: Simplify right side
    2,082.61x = 1,941,461.52
  5. Step 5: Solve for x
    x = 1,941,461.52/2,082.61
  6. Step 6: Final answer
    x = 932.22

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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.