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Finding the Fourth Proportional to 1,671.66, 2,305.62 and 1,008.72

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Solution

The fourth proportional to 1,671.66, 2,305.62 and 1,008.72 is: 1,391.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.66 : 2,305.62 = 1,008.72 : x
  2. Step 2: Convert to fraction form
    1,671.66/2,305.62 = 1,008.72/x
  3. Step 3: Cross multiply
    1,671.66x = 2,305.62 × 1,008.72
  4. Step 4: Simplify right side
    1,671.66x = 2,325,725.01
  5. Step 5: Solve for x
    x = 2,325,725.01/1,671.66
  6. Step 6: Final answer
    x = 1,391.27

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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.