Home / 3,857.93-5,785.70-1,392.43

Finding the Fourth Proportional to 3,857.93, 5,785.70 and 1,392.43

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Solution

The fourth proportional to 3,857.93, 5,785.70 and 1,392.43 is: 2,088.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.93 : 5,785.70 = 1,392.43 : x
  2. Step 2: Convert to fraction form
    3,857.93/5,785.70 = 1,392.43/x
  3. Step 3: Cross multiply
    3,857.93x = 5,785.70 × 1,392.43
  4. Step 4: Simplify right side
    3,857.93x = 8,056,182.25
  5. Step 5: Solve for x
    x = 8,056,182.25/3,857.93
  6. Step 6: Final answer
    x = 2,088.21

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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.