Home / 3,399.70-4,691.81-1,907.72

Finding the Fourth Proportional to 3,399.70, 4,691.81 and 1,907.72

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Solution

The fourth proportional to 3,399.70, 4,691.81 and 1,907.72 is: 2,632.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.70 : 4,691.81 = 1,907.72 : x
  2. Step 2: Convert to fraction form
    3,399.70/4,691.81 = 1,907.72/x
  3. Step 3: Cross multiply
    3,399.70x = 4,691.81 × 1,907.72
  4. Step 4: Simplify right side
    3,399.70x = 8,950,659.77
  5. Step 5: Solve for x
    x = 8,950,659.77/3,399.70
  6. Step 6: Final answer
    x = 2,632.78

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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.