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Finding the Fourth Proportional to 5,631.78, 8,448.56 and 2,512.88

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Solution

The fourth proportional to 5,631.78, 8,448.56 and 2,512.88 is: 3,769.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.78 : 8,448.56 = 2,512.88 : x
  2. Step 2: Convert to fraction form
    5,631.78/8,448.56 = 2,512.88/x
  3. Step 3: Cross multiply
    5,631.78x = 8,448.56 × 2,512.88
  4. Step 4: Simplify right side
    5,631.78x = 21,230,217.45
  5. Step 5: Solve for x
    x = 21,230,217.45/5,631.78
  6. Step 6: Final answer
    x = 3,769.72

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1.5x scale

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.