Home / 3,042.27-4,188.69-2,878.20

Finding the Fourth Proportional to 3,042.27, 4,188.69 and 2,878.20

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Solution

The fourth proportional to 3,042.27, 4,188.69 and 2,878.20 is: 3,962.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,042.27 : 4,188.69 = 2,878.20 : x
  2. Step 2: Convert to fraction form
    3,042.27/4,188.69 = 2,878.20/x
  3. Step 3: Cross multiply
    3,042.27x = 4,188.69 × 2,878.20
  4. Step 4: Simplify right side
    3,042.27x = 12,055,887.56
  5. Step 5: Solve for x
    x = 12,055,887.56/3,042.27
  6. Step 6: Final answer
    x = 3,962.79

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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.