Home / 7,187.30-9,917.93-4,042.88

Finding the Fourth Proportional to 7,187.30, 9,917.93 and 4,042.88

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Solution

The fourth proportional to 7,187.30, 9,917.93 and 4,042.88 is: 5,578.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187.30 : 9,917.93 = 4,042.88 : x
  2. Step 2: Convert to fraction form
    7,187.30/9,917.93 = 4,042.88/x
  3. Step 3: Cross multiply
    7,187.30x = 9,917.93 × 4,042.88
  4. Step 4: Simplify right side
    7,187.30x = 40,096,951.25
  5. Step 5: Solve for x
    x = 40,096,951.25/7,187.30
  6. Step 6: Final answer
    x = 5,578.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.