Home / 2,691.26-4,032.79-1,228.71

Finding the Fourth Proportional to 2,691.26, 4,032.79 and 1,228.71

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Solution

The fourth proportional to 2,691.26, 4,032.79 and 1,228.71 is: 1,841.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.26 : 4,032.79 = 1,228.71 : x
  2. Step 2: Convert to fraction form
    2,691.26/4,032.79 = 1,228.71/x
  3. Step 3: Cross multiply
    2,691.26x = 4,032.79 × 1,228.71
  4. Step 4: Simplify right side
    2,691.26x = 4,955,129.40
  5. Step 5: Solve for x
    x = 4,955,129.40/2,691.26
  6. Step 6: Final answer
    x = 1,841.19

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1.5x scale

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.