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Finding the Fourth Proportional to 8,956.60, 13,425.30 and 3,407.80

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Solution

The fourth proportional to 8,956.60, 13,425.30 and 3,407.80 is: 5,108.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,956.60 : 13,425.30 = 3,407.80 : x
  2. Step 2: Convert to fraction form
    8,956.60/13,425.30 = 3,407.80/x
  3. Step 3: Cross multiply
    8,956.60x = 13,425.30 × 3,407.80
  4. Step 4: Simplify right side
    8,956.60x = 45,750,737.34
  5. Step 5: Solve for x
    x = 45,750,737.34/8,956.60
  6. Step 6: Final answer
    x = 5,108.05

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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.