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Finding the Fourth Proportional to 7,257.98, 10,886.98 and 2,640.98

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Solution

The fourth proportional to 7,257.98, 10,886.98 and 2,640.98 is: 3,961.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,257.98 : 10,886.98 = 2,640.98 : x
  2. Step 2: Convert to fraction form
    7,257.98/10,886.98 = 2,640.98/x
  3. Step 3: Cross multiply
    7,257.98x = 10,886.98 × 2,640.98
  4. Step 4: Simplify right side
    7,257.98x = 28,752,296.44
  5. Step 5: Solve for x
    x = 28,752,296.44/7,257.98
  6. Step 6: Final answer
    x = 3,961.47

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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.