Home / 6,951.20-10,421.16-2,789.36

Finding the Fourth Proportional to 6,951.20, 10,421.16 and 2,789.36

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Solution

The fourth proportional to 6,951.20, 10,421.16 and 2,789.36 is: 4,181.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,951.20 : 10,421.16 = 2,789.36 : x
  2. Step 2: Convert to fraction form
    6,951.20/10,421.16 = 2,789.36/x
  3. Step 3: Cross multiply
    6,951.20x = 10,421.16 × 2,789.36
  4. Step 4: Simplify right side
    6,951.20x = 29,068,366.86
  5. Step 5: Solve for x
    x = 29,068,366.86/6,951.20
  6. Step 6: Final answer
    x = 4,181.78

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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.