Home / 3,826.22-5,279.86-2,147.40

Finding the Fourth Proportional to 3,826.22, 5,279.86 and 2,147.40

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Solution

The fourth proportional to 3,826.22, 5,279.86 and 2,147.40 is: 2,963.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826.22 : 5,279.86 = 2,147.40 : x
  2. Step 2: Convert to fraction form
    3,826.22/5,279.86 = 2,147.40/x
  3. Step 3: Cross multiply
    3,826.22x = 5,279.86 × 2,147.40
  4. Step 4: Simplify right side
    3,826.22x = 11,337,971.36
  5. Step 5: Solve for x
    x = 11,337,971.36/3,826.22
  6. Step 6: Final answer
    x = 2,963.23

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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.