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Finding the Fourth Proportional to 2,641.36, 3,962.04 and 1,180.12

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Solution

The fourth proportional to 2,641.36, 3,962.04 and 1,180.12 is: 1,770.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,641.36 : 3,962.04 = 1,180.12 : x
  2. Step 2: Convert to fraction form
    2,641.36/3,962.04 = 1,180.12/x
  3. Step 3: Cross multiply
    2,641.36x = 3,962.04 × 1,180.12
  4. Step 4: Simplify right side
    2,641.36x = 4,675,682.64
  5. Step 5: Solve for x
    x = 4,675,682.64/2,641.36
  6. Step 6: Final answer
    x = 1,770.18

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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.