Home / 3,917.89-5,876.82-1,287.24

Finding the Fourth Proportional to 3,917.89, 5,876.82 and 1,287.24

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Solution

The fourth proportional to 3,917.89, 5,876.82 and 1,287.24 is: 1,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.89 : 5,876.82 = 1,287.24 : x
  2. Step 2: Convert to fraction form
    3,917.89/5,876.82 = 1,287.24/x
  3. Step 3: Cross multiply
    3,917.89x = 5,876.82 × 1,287.24
  4. Step 4: Simplify right side
    3,917.89x = 7,564,877.78
  5. Step 5: Solve for x
    x = 7,564,877.78/3,917.89
  6. Step 6: Final answer
    x = 1,930.86

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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.