Home / 1,349.61-2,020.92-1,155.86

Finding the Fourth Proportional to 1,349.61, 2,020.92 and 1,155.86

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Solution

The fourth proportional to 1,349.61, 2,020.92 and 1,155.86 is: 1,730.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.61 : 2,020.92 = 1,155.86 : x
  2. Step 2: Convert to fraction form
    1,349.61/2,020.92 = 1,155.86/x
  3. Step 3: Cross multiply
    1,349.61x = 2,020.92 × 1,155.86
  4. Step 4: Simplify right side
    1,349.61x = 2,335,902.67
  5. Step 5: Solve for x
    x = 2,335,902.67/1,349.61
  6. Step 6: Final answer
    x = 1,730.79

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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.