Home / 11,856.38-17,785.62-3,091.28

Finding the Fourth Proportional to 11,856.38, 17,785.62 and 3,091.28

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Solution

The fourth proportional to 11,856.38, 17,785.62 and 3,091.28 is: 4,637.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,856.38 : 17,785.62 = 3,091.28 : x
  2. Step 2: Convert to fraction form
    11,856.38/17,785.62 = 3,091.28/x
  3. Step 3: Cross multiply
    11,856.38x = 17,785.62 × 3,091.28
  4. Step 4: Simplify right side
    11,856.38x = 54,980,331.39
  5. Step 5: Solve for x
    x = 54,980,331.39/11,856.38
  6. Step 6: Final answer
    x = 4,637.19

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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.