Home / 3,988.24-5,985.43-2,815.73

Finding the Fourth Proportional to 3,988.24, 5,985.43 and 2,815.73

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Solution

The fourth proportional to 3,988.24, 5,985.43 and 2,815.73 is: 4,225.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.24 : 5,985.43 = 2,815.73 : x
  2. Step 2: Convert to fraction form
    3,988.24/5,985.43 = 2,815.73/x
  3. Step 3: Cross multiply
    3,988.24x = 5,985.43 × 2,815.73
  4. Step 4: Simplify right side
    3,988.24x = 16,853,340.29
  5. Step 5: Solve for x
    x = 16,853,340.29/3,988.24
  6. Step 6: Final answer
    x = 4,225.76

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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.