Home / 3,985.32-5,500.34-2,869.95

Finding the Fourth Proportional to 3,985.32, 5,500.34 and 2,869.95

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Solution

The fourth proportional to 3,985.32, 5,500.34 and 2,869.95 is: 3,960.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.32 : 5,500.34 = 2,869.95 : x
  2. Step 2: Convert to fraction form
    3,985.32/5,500.34 = 2,869.95/x
  3. Step 3: Cross multiply
    3,985.32x = 5,500.34 × 2,869.95
  4. Step 4: Simplify right side
    3,985.32x = 15,785,700.78
  5. Step 5: Solve for x
    x = 15,785,700.78/3,985.32
  6. Step 6: Final answer
    x = 3,960.96

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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.