Home / 3,606.78-4,976.59-2,191.20

Finding the Fourth Proportional to 3,606.78, 4,976.59 and 2,191.20

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Solution

The fourth proportional to 3,606.78, 4,976.59 and 2,191.20 is: 3,023.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,606.78 : 4,976.59 = 2,191.20 : x
  2. Step 2: Convert to fraction form
    3,606.78/4,976.59 = 2,191.20/x
  3. Step 3: Cross multiply
    3,606.78x = 4,976.59 × 2,191.20
  4. Step 4: Simplify right side
    3,606.78x = 10,904,711.97
  5. Step 5: Solve for x
    x = 10,904,711.97/3,606.78
  6. Step 6: Final answer
    x = 3,023.39

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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.