Home / 5,278.22-7,920.03-2,160.53

Finding the Fourth Proportional to 5,278.22, 7,920.03 and 2,160.53

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Solution

The fourth proportional to 5,278.22, 7,920.03 and 2,160.53 is: 3,241.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.22 : 7,920.03 = 2,160.53 : x
  2. Step 2: Convert to fraction form
    5,278.22/7,920.03 = 2,160.53/x
  3. Step 3: Cross multiply
    5,278.22x = 7,920.03 × 2,160.53
  4. Step 4: Simplify right side
    5,278.22x = 17,111,462.42
  5. Step 5: Solve for x
    x = 17,111,462.42/5,278.22
  6. Step 6: Final answer
    x = 3,241.90

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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.