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Finding the Fourth Proportional to 2,449.12, 3,674.40 and 910.24

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Solution

The fourth proportional to 2,449.12, 3,674.40 and 910.24 is: 1,365.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,449.12 : 3,674.40 = 910.24 : x
  2. Step 2: Convert to fraction form
    2,449.12/3,674.40 = 910.24/x
  3. Step 3: Cross multiply
    2,449.12x = 3,674.40 × 910.24
  4. Step 4: Simplify right side
    2,449.12x = 3,344,585.86
  5. Step 5: Solve for x
    x = 3,344,585.86/2,449.12
  6. Step 6: Final answer
    x = 1,365.63

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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.