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Finding the Fourth Proportional to 1,832.80, 2,760.16 and 1,661.44

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Solution

The fourth proportional to 1,832.80, 2,760.16 and 1,661.44 is: 2,502.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,832.80 : 2,760.16 = 1,661.44 : x
  2. Step 2: Convert to fraction form
    1,832.80/2,760.16 = 1,661.44/x
  3. Step 3: Cross multiply
    1,832.80x = 2,760.16 × 1,661.44
  4. Step 4: Simplify right side
    1,832.80x = 4,585,840.23
  5. Step 5: Solve for x
    x = 4,585,840.23/1,832.80
  6. Step 6: Final answer
    x = 2,502.10

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.