Home / 2,053.38-3,081.12-1,129.66

Finding the Fourth Proportional to 2,053.38, 3,081.12 and 1,129.66

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Solution

The fourth proportional to 2,053.38, 3,081.12 and 1,129.66 is: 1,695.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,053.38 : 3,081.12 = 1,129.66 : x
  2. Step 2: Convert to fraction form
    2,053.38/3,081.12 = 1,129.66/x
  3. Step 3: Cross multiply
    2,053.38x = 3,081.12 × 1,129.66
  4. Step 4: Simplify right side
    2,053.38x = 3,480,618.02
  5. Step 5: Solve for x
    x = 3,480,618.02/2,053.38
  6. Step 6: Final answer
    x = 1,695.07

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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.