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Finding the Fourth Proportional to 2,589.73, 3,883.88 and 715.17

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Solution

The fourth proportional to 2,589.73, 3,883.88 and 715.17 is: 1,072.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.73 : 3,883.88 = 715.17 : x
  2. Step 2: Convert to fraction form
    2,589.73/3,883.88 = 715.17/x
  3. Step 3: Cross multiply
    2,589.73x = 3,883.88 × 715.17
  4. Step 4: Simplify right side
    2,589.73x = 2,777,619.00
  5. Step 5: Solve for x
    x = 2,777,619.00/2,589.73
  6. Step 6: Final answer
    x = 1,072.55

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1.5x scale

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.