Home / 3,331.20-4,996.79-991.19

Finding the Fourth Proportional to 3,331.20, 4,996.79 and 991.19

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Solution

The fourth proportional to 3,331.20, 4,996.79 and 991.19 is: 1,486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,331.20 : 4,996.79 = 991.19 : x
  2. Step 2: Convert to fraction form
    3,331.20/4,996.79 = 991.19/x
  3. Step 3: Cross multiply
    3,331.20x = 4,996.79 × 991.19
  4. Step 4: Simplify right side
    3,331.20x = 4,952,768.28
  5. Step 5: Solve for x
    x = 4,952,768.28/3,331.20
  6. Step 6: Final answer
    x = 1,486.78

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,332.20, 4,998.29 and 992.19
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.