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Finding the Fourth Proportional to 1,711.94, 2,565.84 and 671.29

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Solution

The fourth proportional to 1,711.94, 2,565.84 and 671.29 is: 1,006.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,711.94 : 2,565.84 = 671.29 : x
  2. Step 2: Convert to fraction form
    1,711.94/2,565.84 = 671.29/x
  3. Step 3: Cross multiply
    1,711.94x = 2,565.84 × 671.29
  4. Step 4: Simplify right side
    1,711.94x = 1,722,418.84
  5. Step 5: Solve for x
    x = 1,722,418.84/1,711.94
  6. Step 6: Final answer
    x = 1,006.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.