Home / 3,107.57-4,288.34-1,781.29

Finding the Fourth Proportional to 3,107.57, 4,288.34 and 1,781.29

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Solution

The fourth proportional to 3,107.57, 4,288.34 and 1,781.29 is: 2,458.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.57 : 4,288.34 = 1,781.29 : x
  2. Step 2: Convert to fraction form
    3,107.57/4,288.34 = 1,781.29/x
  3. Step 3: Cross multiply
    3,107.57x = 4,288.34 × 1,781.29
  4. Step 4: Simplify right side
    3,107.57x = 7,638,786.97
  5. Step 5: Solve for x
    x = 7,638,786.97/3,107.57
  6. Step 6: Final answer
    x = 2,458.13

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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.