Home / 1,391.18-2,082.66-1,027.59

Finding the Fourth Proportional to 1,391.18, 2,082.66 and 1,027.59

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Solution

The fourth proportional to 1,391.18, 2,082.66 and 1,027.59 is: 1,538.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391.18 : 2,082.66 = 1,027.59 : x
  2. Step 2: Convert to fraction form
    1,391.18/2,082.66 = 1,027.59/x
  3. Step 3: Cross multiply
    1,391.18x = 2,082.66 × 1,027.59
  4. Step 4: Simplify right side
    1,391.18x = 2,140,114.71
  5. Step 5: Solve for x
    x = 2,140,114.71/1,391.18
  6. Step 6: Final answer
    x = 1,538.35

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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.