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Finding the Fourth Proportional to 5,478.72, 7,562.04 and 3,381.64

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Solution

The fourth proportional to 5,478.72, 7,562.04 and 3,381.64 is: 4,667.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.72 : 7,562.04 = 3,381.64 : x
  2. Step 2: Convert to fraction form
    5,478.72/7,562.04 = 3,381.64/x
  3. Step 3: Cross multiply
    5,478.72x = 7,562.04 × 3,381.64
  4. Step 4: Simplify right side
    5,478.72x = 25,572,096.95
  5. Step 5: Solve for x
    x = 25,572,096.95/5,478.72
  6. Step 6: Final answer
    x = 4,667.53

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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.