Home / 8,125.60-12,186.72-2,788.96

Finding the Fourth Proportional to 8,125.60, 12,186.72 and 2,788.96

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Solution

The fourth proportional to 8,125.60, 12,186.72 and 2,788.96 is: 4,182.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.60 : 12,186.72 = 2,788.96 : x
  2. Step 2: Convert to fraction form
    8,125.60/12,186.72 = 2,788.96/x
  3. Step 3: Cross multiply
    8,125.60x = 12,186.72 × 2,788.96
  4. Step 4: Simplify right side
    8,125.60x = 33,988,274.61
  5. Step 5: Solve for x
    x = 33,988,274.61/8,125.60
  6. Step 6: Final answer
    x = 4,182.86

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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.