Home / 3,865.60-5,335.68-3,079.36

Finding the Fourth Proportional to 3,865.60, 5,335.68 and 3,079.36

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Solution

The fourth proportional to 3,865.60, 5,335.68 and 3,079.36 is: 4,250.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.60 : 5,335.68 = 3,079.36 : x
  2. Step 2: Convert to fraction form
    3,865.60/5,335.68 = 3,079.36/x
  3. Step 3: Cross multiply
    3,865.60x = 5,335.68 × 3,079.36
  4. Step 4: Simplify right side
    3,865.60x = 16,430,479.56
  5. Step 5: Solve for x
    x = 16,430,479.56/3,865.60
  6. Step 6: Final answer
    x = 4,250.43

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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.