Home / 2,180.55-3,271.10-699.87

Finding the Fourth Proportional to 2,180.55, 3,271.10 and 699.87

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Solution

The fourth proportional to 2,180.55, 3,271.10 and 699.87 is: 1,049.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.55 : 3,271.10 = 699.87 : x
  2. Step 2: Convert to fraction form
    2,180.55/3,271.10 = 699.87/x
  3. Step 3: Cross multiply
    2,180.55x = 3,271.10 × 699.87
  4. Step 4: Simplify right side
    2,180.55x = 2,289,341.26
  5. Step 5: Solve for x
    x = 2,289,341.26/2,180.55
  6. Step 6: Final answer
    x = 1,049.89

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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.