Home / 2,082.45-2,872.45-1,242.51

Finding the Fourth Proportional to 2,082.45, 2,872.45 and 1,242.51

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Solution

The fourth proportional to 2,082.45, 2,872.45 and 1,242.51 is: 1,713.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.45 : 2,872.45 = 1,242.51 : x
  2. Step 2: Convert to fraction form
    2,082.45/2,872.45 = 1,242.51/x
  3. Step 3: Cross multiply
    2,082.45x = 2,872.45 × 1,242.51
  4. Step 4: Simplify right side
    2,082.45x = 3,569,047.80
  5. Step 5: Solve for x
    x = 3,569,047.80/2,082.45
  6. Step 6: Final answer
    x = 1,713.87

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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.