Home / 3,531.86-5,291.80-2,140.96

Finding the Fourth Proportional to 3,531.86, 5,291.80 and 2,140.96

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Solution

The fourth proportional to 3,531.86, 5,291.80 and 2,140.96 is: 3,207.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,531.86 : 5,291.80 = 2,140.96 : x
  2. Step 2: Convert to fraction form
    3,531.86/5,291.80 = 2,140.96/x
  3. Step 3: Cross multiply
    3,531.86x = 5,291.80 × 2,140.96
  4. Step 4: Simplify right side
    3,531.86x = 11,329,532.13
  5. Step 5: Solve for x
    x = 11,329,532.13/3,531.86
  6. Step 6: Final answer
    x = 3,207.81

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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.