Home / 2,207.90-3,311.85-542.03

Finding the Fourth Proportional to 2,207.90, 3,311.85 and 542.03

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Solution

The fourth proportional to 2,207.90, 3,311.85 and 542.03 is: 813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.90 : 3,311.85 = 542.03 : x
  2. Step 2: Convert to fraction form
    2,207.90/3,311.85 = 542.03/x
  3. Step 3: Cross multiply
    2,207.90x = 3,311.85 × 542.03
  4. Step 4: Simplify right side
    2,207.90x = 1,795,122.06
  5. Step 5: Solve for x
    x = 1,795,122.06/2,207.90
  6. Step 6: Final answer
    x = 813.05

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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.