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Finding the Fourth Proportional to 1,671.76, 2,306.64 and 1,008.64

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Solution

The fourth proportional to 1,671.76, 2,306.64 and 1,008.64 is: 1,391.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.76 : 2,306.64 = 1,008.64 : x
  2. Step 2: Convert to fraction form
    1,671.76/2,306.64 = 1,008.64/x
  3. Step 3: Cross multiply
    1,671.76x = 2,306.64 × 1,008.64
  4. Step 4: Simplify right side
    1,671.76x = 2,326,569.37
  5. Step 5: Solve for x
    x = 2,326,569.37/1,671.76
  6. Step 6: Final answer
    x = 1,391.69

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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.