Home / 7,169.09-10,749.51-2,781.42

Finding the Fourth Proportional to 7,169.09, 10,749.51 and 2,781.42

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Solution

The fourth proportional to 7,169.09, 10,749.51 and 2,781.42 is: 4,170.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,169.09 : 10,749.51 = 2,781.42 : x
  2. Step 2: Convert to fraction form
    7,169.09/10,749.51 = 2,781.42/x
  3. Step 3: Cross multiply
    7,169.09x = 10,749.51 × 2,781.42
  4. Step 4: Simplify right side
    7,169.09x = 29,898,902.10
  5. Step 5: Solve for x
    x = 29,898,902.10/7,169.09
  6. Step 6: Final answer
    x = 4,170.53

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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.