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Finding the Fourth Proportional to 6,967.92, 9,615.70 and 3,781.22

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Solution

The fourth proportional to 6,967.92, 9,615.70 and 3,781.22 is: 5,218.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,967.92 : 9,615.70 = 3,781.22 : x
  2. Step 2: Convert to fraction form
    6,967.92/9,615.70 = 3,781.22/x
  3. Step 3: Cross multiply
    6,967.92x = 9,615.70 × 3,781.22
  4. Step 4: Simplify right side
    6,967.92x = 36,359,010.17
  5. Step 5: Solve for x
    x = 36,359,010.17/6,967.92
  6. Step 6: Final answer
    x = 5,218.06

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1.5x scale

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.