Home / 3,868.32-5,335.56-2,689.68

Finding the Fourth Proportional to 3,868.32, 5,335.56 and 2,689.68

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Solution

The fourth proportional to 3,868.32, 5,335.56 and 2,689.68 is: 3,709.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.32 : 5,335.56 = 2,689.68 : x
  2. Step 2: Convert to fraction form
    3,868.32/5,335.56 = 2,689.68/x
  3. Step 3: Cross multiply
    3,868.32x = 5,335.56 × 2,689.68
  4. Step 4: Simplify right side
    3,868.32x = 14,350,949.02
  5. Step 5: Solve for x
    x = 14,350,949.02/3,868.32
  6. Step 6: Final answer
    x = 3,709.87

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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.