Home / 2,879.91-3,971.39-2,723.81

Finding the Fourth Proportional to 2,879.91, 3,971.39 and 2,723.81

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Solution

The fourth proportional to 2,879.91, 3,971.39 and 2,723.81 is: 3,756.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.91 : 3,971.39 = 2,723.81 : x
  2. Step 2: Convert to fraction form
    2,879.91/3,971.39 = 2,723.81/x
  3. Step 3: Cross multiply
    2,879.91x = 3,971.39 × 2,723.81
  4. Step 4: Simplify right side
    2,879.91x = 10,817,278.32
  5. Step 5: Solve for x
    x = 10,817,278.32/2,879.91
  6. Step 6: Final answer
    x = 3,756.12

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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.