Home / 3,856.65-5,785.89-1,393.26

Finding the Fourth Proportional to 3,856.65, 5,785.89 and 1,393.26

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Solution

The fourth proportional to 3,856.65, 5,785.89 and 1,393.26 is: 2,090.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.65 : 5,785.89 = 1,393.26 : x
  2. Step 2: Convert to fraction form
    3,856.65/5,785.89 = 1,393.26/x
  3. Step 3: Cross multiply
    3,856.65x = 5,785.89 × 1,393.26
  4. Step 4: Simplify right side
    3,856.65x = 8,061,249.10
  5. Step 5: Solve for x
    x = 8,061,249.10/3,856.65
  6. Step 6: Final answer
    x = 2,090.22

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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.