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Finding the Fourth Proportional to 2,253.88, 3,380.82 and 715

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Solution

The fourth proportional to 2,253.88, 3,380.82 and 715 is: 1,072.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,253.88 : 3,380.82 = 715 : x
  2. Step 2: Convert to fraction form
    2,253.88/3,380.82 = 715/x
  3. Step 3: Cross multiply
    2,253.88x = 3,380.82 × 715
  4. Step 4: Simplify right side
    2,253.88x = 2,417,286.30
  5. Step 5: Solve for x
    x = 2,417,286.30/2,253.88
  6. Step 6: Final answer
    x = 1,072.50

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.