Home / 6,781.40-10,174.32-4,279.69

Finding the Fourth Proportional to 6,781.40, 10,174.32 and 4,279.69

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Solution

The fourth proportional to 6,781.40, 10,174.32 and 4,279.69 is: 6,420.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.40 : 10,174.32 = 4,279.69 : x
  2. Step 2: Convert to fraction form
    6,781.40/10,174.32 = 4,279.69/x
  3. Step 3: Cross multiply
    6,781.40x = 10,174.32 × 4,279.69
  4. Step 4: Simplify right side
    6,781.40x = 43,542,910.13
  5. Step 5: Solve for x
    x = 43,542,910.13/6,781.40
  6. Step 6: Final answer
    x = 6,420.94

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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.