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Finding the Fourth Proportional to 2,678.46, 4,016.68 and 922.97

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Solution

The fourth proportional to 2,678.46, 4,016.68 and 922.97 is: 1,384.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.46 : 4,016.68 = 922.97 : x
  2. Step 2: Convert to fraction form
    2,678.46/4,016.68 = 922.97/x
  3. Step 3: Cross multiply
    2,678.46x = 4,016.68 × 922.97
  4. Step 4: Simplify right side
    2,678.46x = 3,707,275.14
  5. Step 5: Solve for x
    x = 3,707,275.14/2,678.46
  6. Step 6: Final answer
    x = 1,384.11

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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.