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Finding the Fourth Proportional to 2,113.97, 2,917.29 and 1,182.47

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Solution

The fourth proportional to 2,113.97, 2,917.29 and 1,182.47 is: 1,631.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.97 : 2,917.29 = 1,182.47 : x
  2. Step 2: Convert to fraction form
    2,113.97/2,917.29 = 1,182.47/x
  3. Step 3: Cross multiply
    2,113.97x = 2,917.29 × 1,182.47
  4. Step 4: Simplify right side
    2,113.97x = 3,449,607.91
  5. Step 5: Solve for x
    x = 3,449,607.91/2,113.97
  6. Step 6: Final answer
    x = 1,631.81

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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.