Home / 3,899.24-5,378.69-2,305.35

Finding the Fourth Proportional to 3,899.24, 5,378.69 and 2,305.35

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Solution

The fourth proportional to 3,899.24, 5,378.69 and 2,305.35 is: 3,180.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.24 : 5,378.69 = 2,305.35 : x
  2. Step 2: Convert to fraction form
    3,899.24/5,378.69 = 2,305.35/x
  3. Step 3: Cross multiply
    3,899.24x = 5,378.69 × 2,305.35
  4. Step 4: Simplify right side
    3,899.24x = 12,399,757.95
  5. Step 5: Solve for x
    x = 12,399,757.95/3,899.24
  6. Step 6: Final answer
    x = 3,180.05

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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.