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Finding the Fourth Proportional to 7,561.71, 11,335.28 and 3,865.68

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Solution

The fourth proportional to 7,561.71, 11,335.28 and 3,865.68 is: 5,794.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,561.71 : 11,335.28 = 3,865.68 : x
  2. Step 2: Convert to fraction form
    7,561.71/11,335.28 = 3,865.68/x
  3. Step 3: Cross multiply
    7,561.71x = 11,335.28 × 3,865.68
  4. Step 4: Simplify right side
    7,561.71x = 43,818,545.86
  5. Step 5: Solve for x
    x = 43,818,545.86/7,561.71
  6. Step 6: Final answer
    x = 5,794.79

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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.