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Finding the Fourth Proportional to 8,819.80, 13,215.66 and 4,659.64

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Solution

The fourth proportional to 8,819.80, 13,215.66 and 4,659.64 is: 6,982.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,819.80 : 13,215.66 = 4,659.64 : x
  2. Step 2: Convert to fraction form
    8,819.80/13,215.66 = 4,659.64/x
  3. Step 3: Cross multiply
    8,819.80x = 13,215.66 × 4,659.64
  4. Step 4: Simplify right side
    8,819.80x = 61,580,217.96
  5. Step 5: Solve for x
    x = 61,580,217.96/8,819.80
  6. Step 6: Final answer
    x = 6,982.04

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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.