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Finding the Fourth Proportional to 2,398.80, 3,310.30 and 1,350.86

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Solution

The fourth proportional to 2,398.80, 3,310.30 and 1,350.86 is: 1,864.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,398.80 : 3,310.30 = 1,350.86 : x
  2. Step 2: Convert to fraction form
    2,398.80/3,310.30 = 1,350.86/x
  3. Step 3: Cross multiply
    2,398.80x = 3,310.30 × 1,350.86
  4. Step 4: Simplify right side
    2,398.80x = 4,471,751.86
  5. Step 5: Solve for x
    x = 4,471,751.86/2,398.80
  6. Step 6: Final answer
    x = 1,864.16

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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.