Home / 8,695.87-13,043.78-3,147.92

Finding the Fourth Proportional to 8,695.87, 13,043.78 and 3,147.92

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Solution

The fourth proportional to 8,695.87, 13,043.78 and 3,147.92 is: 4,721.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.87 : 13,043.78 = 3,147.92 : x
  2. Step 2: Convert to fraction form
    8,695.87/13,043.78 = 3,147.92/x
  3. Step 3: Cross multiply
    8,695.87x = 13,043.78 × 3,147.92
  4. Step 4: Simplify right side
    8,695.87x = 41,060,775.94
  5. Step 5: Solve for x
    x = 41,060,775.94/8,695.87
  6. Step 6: Final answer
    x = 4,721.87

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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.