Home / 7,919.18-11,881.42-2,654.72

Finding the Fourth Proportional to 7,919.18, 11,881.42 and 2,654.72

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Solution

The fourth proportional to 7,919.18, 11,881.42 and 2,654.72 is: 3,982.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.18 : 11,881.42 = 2,654.72 : x
  2. Step 2: Convert to fraction form
    7,919.18/11,881.42 = 2,654.72/x
  3. Step 3: Cross multiply
    7,919.18x = 11,881.42 × 2,654.72
  4. Step 4: Simplify right side
    7,919.18x = 31,541,821.81
  5. Step 5: Solve for x
    x = 31,541,821.81/7,919.18
  6. Step 6: Final answer
    x = 3,982.96

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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.