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Finding the Fourth Proportional to 8,544.90, 12,819.78 and 4,164.78

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Solution

The fourth proportional to 8,544.90, 12,819.78 and 4,164.78 is: 6,248.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,544.90 : 12,819.78 = 4,164.78 : x
  2. Step 2: Convert to fraction form
    8,544.90/12,819.78 = 4,164.78/x
  3. Step 3: Cross multiply
    8,544.90x = 12,819.78 × 4,164.78
  4. Step 4: Simplify right side
    8,544.90x = 53,391,563.35
  5. Step 5: Solve for x
    x = 53,391,563.35/8,544.90
  6. Step 6: Final answer
    x = 6,248.35

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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.