Home / 7,815.92-11,710.10-4,109.36

Finding the Fourth Proportional to 7,815.92, 11,710.10 and 4,109.36

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Solution

The fourth proportional to 7,815.92, 11,710.10 and 4,109.36 is: 6,156.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.92 : 11,710.10 = 4,109.36 : x
  2. Step 2: Convert to fraction form
    7,815.92/11,710.10 = 4,109.36/x
  3. Step 3: Cross multiply
    7,815.92x = 11,710.10 × 4,109.36
  4. Step 4: Simplify right side
    7,815.92x = 48,121,016.54
  5. Step 5: Solve for x
    x = 48,121,016.54/7,815.92
  6. Step 6: Final answer
    x = 6,156.79

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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.