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Finding the Fourth Proportional to 1,341.97, 1,997.92 and 1,335.47

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Solution

The fourth proportional to 1,341.97, 1,997.92 and 1,335.47 is: 1,988.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.97 : 1,997.92 = 1,335.47 : x
  2. Step 2: Convert to fraction form
    1,341.97/1,997.92 = 1,335.47/x
  3. Step 3: Cross multiply
    1,341.97x = 1,997.92 × 1,335.47
  4. Step 4: Simplify right side
    1,341.97x = 2,668,157.63
  5. Step 5: Solve for x
    x = 2,668,157.63/1,341.97
  6. Step 6: Final answer
    x = 1,988.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.