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Finding the Fourth Proportional to 6,685.76, 9,227.15 and 3,891.26

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Solution

The fourth proportional to 6,685.76, 9,227.15 and 3,891.26 is: 5,370.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,685.76 : 9,227.15 = 3,891.26 : x
  2. Step 2: Convert to fraction form
    6,685.76/9,227.15 = 3,891.26/x
  3. Step 3: Cross multiply
    6,685.76x = 9,227.15 × 3,891.26
  4. Step 4: Simplify right side
    6,685.76x = 35,905,239.71
  5. Step 5: Solve for x
    x = 35,905,239.71/6,685.76
  6. Step 6: Final answer
    x = 5,370.41

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Double scale
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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.