Home / 7,126.86-9,834.85-3,939.97

Finding the Fourth Proportional to 7,126.86, 9,834.85 and 3,939.97

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Solution

The fourth proportional to 7,126.86, 9,834.85 and 3,939.97 is: 5,437.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126.86 : 9,834.85 = 3,939.97 : x
  2. Step 2: Convert to fraction form
    7,126.86/9,834.85 = 3,939.97/x
  3. Step 3: Cross multiply
    7,126.86x = 9,834.85 × 3,939.97
  4. Step 4: Simplify right side
    7,126.86x = 38,748,945.08
  5. Step 5: Solve for x
    x = 38,748,945.08/7,126.86
  6. Step 6: Final answer
    x = 5,437.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.