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Finding the Fourth Proportional to 2,641.82, 3,962.72 and 910.44

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Solution

The fourth proportional to 2,641.82, 3,962.72 and 910.44 is: 1,365.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,641.82 : 3,962.72 = 910.44 : x
  2. Step 2: Convert to fraction form
    2,641.82/3,962.72 = 910.44/x
  3. Step 3: Cross multiply
    2,641.82x = 3,962.72 × 910.44
  4. Step 4: Simplify right side
    2,641.82x = 3,607,818.80
  5. Step 5: Solve for x
    x = 3,607,818.80/2,641.82
  6. Step 6: Final answer
    x = 1,365.66

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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.