Home / 3,079.68-4,255.38-2,686.02

Finding the Fourth Proportional to 3,079.68, 4,255.38 and 2,686.02

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Solution

The fourth proportional to 3,079.68, 4,255.38 and 2,686.02 is: 3,711.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.68 : 4,255.38 = 2,686.02 : x
  2. Step 2: Convert to fraction form
    3,079.68/4,255.38 = 2,686.02/x
  3. Step 3: Cross multiply
    3,079.68x = 4,255.38 × 2,686.02
  4. Step 4: Simplify right side
    3,079.68x = 11,430,035.79
  5. Step 5: Solve for x
    x = 11,430,035.79/3,079.68
  6. Step 6: Final answer
    x = 3,711.44

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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.