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Finding the Fourth Proportional to 2,454.81, 3,384.05 and 1,929.93

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Solution

The fourth proportional to 2,454.81, 3,384.05 and 1,929.93 is: 2,660.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,454.81 : 3,384.05 = 1,929.93 : x
  2. Step 2: Convert to fraction form
    2,454.81/3,384.05 = 1,929.93/x
  3. Step 3: Cross multiply
    2,454.81x = 3,384.05 × 1,929.93
  4. Step 4: Simplify right side
    2,454.81x = 6,530,979.62
  5. Step 5: Solve for x
    x = 6,530,979.62/2,454.81
  6. Step 6: Final answer
    x = 2,660.48

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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.