Home / 2,215.92-3,057.28-1,331.92

Finding the Fourth Proportional to 2,215.92, 3,057.28 and 1,331.92

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Solution

The fourth proportional to 2,215.92, 3,057.28 and 1,331.92 is: 1,837.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.92 : 3,057.28 = 1,331.92 : x
  2. Step 2: Convert to fraction form
    2,215.92/3,057.28 = 1,331.92/x
  3. Step 3: Cross multiply
    2,215.92x = 3,057.28 × 1,331.92
  4. Step 4: Simplify right side
    2,215.92x = 4,072,052.38
  5. Step 5: Solve for x
    x = 4,072,052.38/2,215.92
  6. Step 6: Final answer
    x = 1,837.64

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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.