Home / 2,082.80-3,123.30-1,042.40

Finding the Fourth Proportional to 2,082.80, 3,123.30 and 1,042.40

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Solution

The fourth proportional to 2,082.80, 3,123.30 and 1,042.40 is: 1,563.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.80 : 3,123.30 = 1,042.40 : x
  2. Step 2: Convert to fraction form
    2,082.80/3,123.30 = 1,042.40/x
  3. Step 3: Cross multiply
    2,082.80x = 3,123.30 × 1,042.40
  4. Step 4: Simplify right side
    2,082.80x = 3,255,727.92
  5. Step 5: Solve for x
    x = 3,255,727.92/2,082.80
  6. Step 6: Final answer
    x = 1,563.15

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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.