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Finding the Fourth Proportional to 6,753.68, 9,320.61 and 3,921.94

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Solution

The fourth proportional to 6,753.68, 9,320.61 and 3,921.94 is: 5,412.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,753.68 : 9,320.61 = 3,921.94 : x
  2. Step 2: Convert to fraction form
    6,753.68/9,320.61 = 3,921.94/x
  3. Step 3: Cross multiply
    6,753.68x = 9,320.61 × 3,921.94
  4. Step 4: Simplify right side
    6,753.68x = 36,554,873.18
  5. Step 5: Solve for x
    x = 36,554,873.18/6,753.68
  6. Step 6: Final answer
    x = 5,412.59

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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.