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Finding the Fourth Proportional to 6,615.65, 9,921.92 and 1,934.68

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Solution

The fourth proportional to 6,615.65, 9,921.92 and 1,934.68 is: 2,901.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.65 : 9,921.92 = 1,934.68 : x
  2. Step 2: Convert to fraction form
    6,615.65/9,921.92 = 1,934.68/x
  3. Step 3: Cross multiply
    6,615.65x = 9,921.92 × 1,934.68
  4. Step 4: Simplify right side
    6,615.65x = 19,195,720.22
  5. Step 5: Solve for x
    x = 19,195,720.22/6,615.65
  6. Step 6: Final answer
    x = 2,901.56

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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.