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Finding the Fourth Proportional to 8,812.74, 13,207.20 and 3,260.88

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Solution

The fourth proportional to 8,812.74, 13,207.20 and 3,260.88 is: 4,886.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.74 : 13,207.20 = 3,260.88 : x
  2. Step 2: Convert to fraction form
    8,812.74/13,207.20 = 3,260.88/x
  3. Step 3: Cross multiply
    8,812.74x = 13,207.20 × 3,260.88
  4. Step 4: Simplify right side
    8,812.74x = 43,067,094.34
  5. Step 5: Solve for x
    x = 43,067,094.34/8,812.74
  6. Step 6: Final answer
    x = 4,886.91

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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.