Home / 2,149.99-3,221.94-916.15

Finding the Fourth Proportional to 2,149.99, 3,221.94 and 916.15

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Solution

The fourth proportional to 2,149.99, 3,221.94 and 916.15 is: 1,372.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.99 : 3,221.94 = 916.15 : x
  2. Step 2: Convert to fraction form
    2,149.99/3,221.94 = 916.15/x
  3. Step 3: Cross multiply
    2,149.99x = 3,221.94 × 916.15
  4. Step 4: Simplify right side
    2,149.99x = 2,951,780.33
  5. Step 5: Solve for x
    x = 2,951,780.33/2,149.99
  6. Step 6: Final answer
    x = 1,372.93

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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.