Home / 7,939.77-11,911.25-2,674.57

Finding the Fourth Proportional to 7,939.77, 11,911.25 and 2,674.57

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Solution

The fourth proportional to 7,939.77, 11,911.25 and 2,674.57 is: 4,012.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.77 : 11,911.25 = 2,674.57 : x
  2. Step 2: Convert to fraction form
    7,939.77/11,911.25 = 2,674.57/x
  3. Step 3: Cross multiply
    7,939.77x = 11,911.25 × 2,674.57
  4. Step 4: Simplify right side
    7,939.77x = 31,857,471.91
  5. Step 5: Solve for x
    x = 31,857,471.91/7,939.77
  6. Step 6: Final answer
    x = 4,012.39

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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.