Home / 7,972.15-11,951.75-2,781.67

Finding the Fourth Proportional to 7,972.15, 11,951.75 and 2,781.67

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Solution

The fourth proportional to 7,972.15, 11,951.75 and 2,781.67 is: 4,170.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.15 : 11,951.75 = 2,781.67 : x
  2. Step 2: Convert to fraction form
    7,972.15/11,951.75 = 2,781.67/x
  3. Step 3: Cross multiply
    7,972.15x = 11,951.75 × 2,781.67
  4. Step 4: Simplify right side
    7,972.15x = 33,245,810.51
  5. Step 5: Solve for x
    x = 33,245,810.51/7,972.15
  6. Step 6: Final answer
    x = 4,170.24

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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.