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Finding the Fourth Proportional to 1,671.88, 2,304.78 and 1,172.97

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Solution

The fourth proportional to 1,671.88, 2,304.78 and 1,172.97 is: 1,617.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.88 : 2,304.78 = 1,172.97 : x
  2. Step 2: Convert to fraction form
    1,671.88/2,304.78 = 1,172.97/x
  3. Step 3: Cross multiply
    1,671.88x = 2,304.78 × 1,172.97
  4. Step 4: Simplify right side
    1,671.88x = 2,703,420.41
  5. Step 5: Solve for x
    x = 2,703,420.41/1,671.88
  6. Step 6: Final answer
    x = 1,617.00

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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.