Home / 1,790.79-2,471.20-1,082.80

Finding the Fourth Proportional to 1,790.79, 2,471.20 and 1,082.80

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Solution

The fourth proportional to 1,790.79, 2,471.20 and 1,082.80 is: 1,494.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.79 : 2,471.20 = 1,082.80 : x
  2. Step 2: Convert to fraction form
    1,790.79/2,471.20 = 1,082.80/x
  3. Step 3: Cross multiply
    1,790.79x = 2,471.20 × 1,082.80
  4. Step 4: Simplify right side
    1,790.79x = 2,675,815.36
  5. Step 5: Solve for x
    x = 2,675,815.36/1,790.79
  6. Step 6: Final answer
    x = 1,494.21

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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.