Home / 3,839.34-5,292.96-2,578.20

Finding the Fourth Proportional to 3,839.34, 5,292.96 and 2,578.20

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Solution

The fourth proportional to 3,839.34, 5,292.96 and 2,578.20 is: 3,554.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.34 : 5,292.96 = 2,578.20 : x
  2. Step 2: Convert to fraction form
    3,839.34/5,292.96 = 2,578.20/x
  3. Step 3: Cross multiply
    3,839.34x = 5,292.96 × 2,578.20
  4. Step 4: Simplify right side
    3,839.34x = 13,646,309.47
  5. Step 5: Solve for x
    x = 13,646,309.47/3,839.34
  6. Step 6: Final answer
    x = 3,554.34

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.