Home / 7,917.60-11,877.72-2,722.08

Finding the Fourth Proportional to 7,917.60, 11,877.72 and 2,722.08

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Solution

The fourth proportional to 7,917.60, 11,877.72 and 2,722.08 is: 4,083.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.60 : 11,877.72 = 2,722.08 : x
  2. Step 2: Convert to fraction form
    7,917.60/11,877.72 = 2,722.08/x
  3. Step 3: Cross multiply
    7,917.60x = 11,877.72 × 2,722.08
  4. Step 4: Simplify right side
    7,917.60x = 32,332,104.06
  5. Step 5: Solve for x
    x = 32,332,104.06/7,917.60
  6. Step 6: Final answer
    x = 4,083.57

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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.