Home / 3,109.87-4,666.30-1,939.57

Finding the Fourth Proportional to 3,109.87, 4,666.30 and 1,939.57

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Solution

The fourth proportional to 3,109.87, 4,666.30 and 1,939.57 is: 2,910.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.87 : 4,666.30 = 1,939.57 : x
  2. Step 2: Convert to fraction form
    3,109.87/4,666.30 = 1,939.57/x
  3. Step 3: Cross multiply
    3,109.87x = 4,666.30 × 1,939.57
  4. Step 4: Simplify right side
    3,109.87x = 9,050,609.37
  5. Step 5: Solve for x
    x = 9,050,609.37/3,109.87
  6. Step 6: Final answer
    x = 2,910.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.