Home / 3,985.80-5,500.52-2,217.52

Finding the Fourth Proportional to 3,985.80, 5,500.52 and 2,217.52

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Solution

The fourth proportional to 3,985.80, 5,500.52 and 2,217.52 is: 3,060.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.80 : 5,500.52 = 2,217.52 : x
  2. Step 2: Convert to fraction form
    3,985.80/5,500.52 = 2,217.52/x
  3. Step 3: Cross multiply
    3,985.80x = 5,500.52 × 2,217.52
  4. Step 4: Simplify right side
    3,985.80x = 12,197,513.11
  5. Step 5: Solve for x
    x = 12,197,513.11/3,985.80
  6. Step 6: Final answer
    x = 3,060.24

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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.