Home / 2,215.94-3,057.97-1,221.19

Finding the Fourth Proportional to 2,215.94, 3,057.97 and 1,221.19

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Solution

The fourth proportional to 2,215.94, 3,057.97 and 1,221.19 is: 1,685.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.94 : 3,057.97 = 1,221.19 : x
  2. Step 2: Convert to fraction form
    2,215.94/3,057.97 = 1,221.19/x
  3. Step 3: Cross multiply
    2,215.94x = 3,057.97 × 1,221.19
  4. Step 4: Simplify right side
    2,215.94x = 3,734,362.38
  5. Step 5: Solve for x
    x = 3,734,362.38/2,215.94
  6. Step 6: Final answer
    x = 1,685.23

Related Problems

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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.