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Finding the Fourth Proportional to 1,784.91, 2,463.15 and 998.97

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Solution

The fourth proportional to 1,784.91, 2,463.15 and 998.97 is: 1,378.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784.91 : 2,463.15 = 998.97 : x
  2. Step 2: Convert to fraction form
    1,784.91/2,463.15 = 998.97/x
  3. Step 3: Cross multiply
    1,784.91x = 2,463.15 × 998.97
  4. Step 4: Simplify right side
    1,784.91x = 2,460,612.96
  5. Step 5: Solve for x
    x = 2,460,612.96/1,784.91
  6. Step 6: Final answer
    x = 1,378.56

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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.