Home / 1,729.38-2,385.80-1,169.66

Finding the Fourth Proportional to 1,729.38, 2,385.80 and 1,169.66

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Solution

The fourth proportional to 1,729.38, 2,385.80 and 1,169.66 is: 1,613.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.38 : 2,385.80 = 1,169.66 : x
  2. Step 2: Convert to fraction form
    1,729.38/2,385.80 = 1,169.66/x
  3. Step 3: Cross multiply
    1,729.38x = 2,385.80 × 1,169.66
  4. Step 4: Simplify right side
    1,729.38x = 2,790,557.05
  5. Step 5: Solve for x
    x = 2,790,557.05/1,729.38
  6. Step 6: Final answer
    x = 1,613.62

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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.