Home / 7,781.38-11,673.78-2,851.07

Finding the Fourth Proportional to 7,781.38, 11,673.78 and 2,851.07

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Solution

The fourth proportional to 7,781.38, 11,673.78 and 2,851.07 is: 4,277.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.38 : 11,673.78 = 2,851.07 : x
  2. Step 2: Convert to fraction form
    7,781.38/11,673.78 = 2,851.07/x
  3. Step 3: Cross multiply
    7,781.38x = 11,673.78 × 2,851.07
  4. Step 4: Simplify right side
    7,781.38x = 33,282,694.88
  5. Step 5: Solve for x
    x = 33,282,694.88/7,781.38
  6. Step 6: Final answer
    x = 4,277.22

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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.