Home / 7,818.78-10,789.92-4,281.96

Finding the Fourth Proportional to 7,818.78, 10,789.92 and 4,281.96

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Solution

The fourth proportional to 7,818.78, 10,789.92 and 4,281.96 is: 5,909.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.78 : 10,789.92 = 4,281.96 : x
  2. Step 2: Convert to fraction form
    7,818.78/10,789.92 = 4,281.96/x
  3. Step 3: Cross multiply
    7,818.78x = 10,789.92 × 4,281.96
  4. Step 4: Simplify right side
    7,818.78x = 46,202,005.84
  5. Step 5: Solve for x
    x = 46,202,005.84/7,818.78
  6. Step 6: Final answer
    x = 5,909.11

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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.