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Finding the Fourth Proportional to 3,642.84, 5,464.26 and 3,279.15

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Solution

The fourth proportional to 3,642.84, 5,464.26 and 3,279.15 is: 4,918.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,642.84 : 5,464.26 = 3,279.15 : x
  2. Step 2: Convert to fraction form
    3,642.84/5,464.26 = 3,279.15/x
  3. Step 3: Cross multiply
    3,642.84x = 5,464.26 × 3,279.15
  4. Step 4: Simplify right side
    3,642.84x = 17,918,128.18
  5. Step 5: Solve for x
    x = 17,918,128.18/3,642.84
  6. Step 6: Final answer
    x = 4,918.73

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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.