Home / 3,399.20-4,691.12-1,907.22

Finding the Fourth Proportional to 3,399.20, 4,691.12 and 1,907.22

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Solution

The fourth proportional to 3,399.20, 4,691.12 and 1,907.22 is: 2,632.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.20 : 4,691.12 = 1,907.22 : x
  2. Step 2: Convert to fraction form
    3,399.20/4,691.12 = 1,907.22/x
  3. Step 3: Cross multiply
    3,399.20x = 4,691.12 × 1,907.22
  4. Step 4: Simplify right side
    3,399.20x = 8,946,997.89
  5. Step 5: Solve for x
    x = 8,946,997.89/3,399.20
  6. Step 6: Final answer
    x = 2,632.09

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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.