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Finding the Fourth Proportional to 2,397.76, 3,308.70 and 1,335.44

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Solution

The fourth proportional to 2,397.76, 3,308.70 and 1,335.44 is: 1,842.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,397.76 : 3,308.70 = 1,335.44 : x
  2. Step 2: Convert to fraction form
    2,397.76/3,308.70 = 1,335.44/x
  3. Step 3: Cross multiply
    2,397.76x = 3,308.70 × 1,335.44
  4. Step 4: Simplify right side
    2,397.76x = 4,418,570.33
  5. Step 5: Solve for x
    x = 4,418,570.33/2,397.76
  6. Step 6: Final answer
    x = 1,842.79

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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.