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Finding the Fourth Proportional to 5,489.42, 7,575.42 and 2,971.53

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Solution

The fourth proportional to 5,489.42, 7,575.42 and 2,971.53 is: 4,100.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.42 : 7,575.42 = 2,971.53 : x
  2. Step 2: Convert to fraction form
    5,489.42/7,575.42 = 2,971.53/x
  3. Step 3: Cross multiply
    5,489.42x = 7,575.42 × 2,971.53
  4. Step 4: Simplify right side
    5,489.42x = 22,510,562.45
  5. Step 5: Solve for x
    x = 22,510,562.45/5,489.42
  6. Step 6: Final answer
    x = 4,100.72

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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.