Home / 7,881.90-11,819.78-3,440.93

Finding the Fourth Proportional to 7,881.90, 11,819.78 and 3,440.93

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Solution

The fourth proportional to 7,881.90, 11,819.78 and 3,440.93 is: 5,160.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.90 : 11,819.78 = 3,440.93 : x
  2. Step 2: Convert to fraction form
    7,881.90/11,819.78 = 3,440.93/x
  3. Step 3: Cross multiply
    7,881.90x = 11,819.78 × 3,440.93
  4. Step 4: Simplify right side
    7,881.90x = 40,670,993.42
  5. Step 5: Solve for x
    x = 40,670,993.42/7,881.90
  6. Step 6: Final answer
    x = 5,160.05

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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.