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Finding the Fourth Proportional to 5,451.78, 7,522.46 and 3,661.86

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Solution

The fourth proportional to 5,451.78, 7,522.46 and 3,661.86 is: 5,052.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.78 : 7,522.46 = 3,661.86 : x
  2. Step 2: Convert to fraction form
    5,451.78/7,522.46 = 3,661.86/x
  3. Step 3: Cross multiply
    5,451.78x = 7,522.46 × 3,661.86
  4. Step 4: Simplify right side
    5,451.78x = 27,546,195.38
  5. Step 5: Solve for x
    x = 27,546,195.38/5,451.78
  6. Step 6: Final answer
    x = 5,052.70

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1.5x scale

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.