Home / 1,761.72-2,431.66-1,098.18

Finding the Fourth Proportional to 1,761.72, 2,431.66 and 1,098.18

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Solution

The fourth proportional to 1,761.72, 2,431.66 and 1,098.18 is: 1,515.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.72 : 2,431.66 = 1,098.18 : x
  2. Step 2: Convert to fraction form
    1,761.72/2,431.66 = 1,098.18/x
  3. Step 3: Cross multiply
    1,761.72x = 2,431.66 × 1,098.18
  4. Step 4: Simplify right side
    1,761.72x = 2,670,400.38
  5. Step 5: Solve for x
    x = 2,670,400.38/1,761.72
  6. Step 6: Final answer
    x = 1,515.79

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1.5x scale

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.