Home / 3,531.12-5,291.20-1,338.66

Finding the Fourth Proportional to 3,531.12, 5,291.20 and 1,338.66

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Solution

The fourth proportional to 3,531.12, 5,291.20 and 1,338.66 is: 2,005.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,531.12 : 5,291.20 = 1,338.66 : x
  2. Step 2: Convert to fraction form
    3,531.12/5,291.20 = 1,338.66/x
  3. Step 3: Cross multiply
    3,531.12x = 5,291.20 × 1,338.66
  4. Step 4: Simplify right side
    3,531.12x = 7,083,117.79
  5. Step 5: Solve for x
    x = 7,083,117.79/3,531.12
  6. Step 6: Final answer
    x = 2,005.91

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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.