Home / 2,079.38-2,869.17-1,239.77

Finding the Fourth Proportional to 2,079.38, 2,869.17 and 1,239.77

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Solution

The fourth proportional to 2,079.38, 2,869.17 and 1,239.77 is: 1,710.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.38 : 2,869.17 = 1,239.77 : x
  2. Step 2: Convert to fraction form
    2,079.38/2,869.17 = 1,239.77/x
  3. Step 3: Cross multiply
    2,079.38x = 2,869.17 × 1,239.77
  4. Step 4: Simplify right side
    2,079.38x = 3,557,110.89
  5. Step 5: Solve for x
    x = 3,557,110.89/2,079.38
  6. Step 6: Final answer
    x = 1,710.66

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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.