Home / 3,711.96-5,118.30-2,778.84

Finding the Fourth Proportional to 3,711.96, 5,118.30 and 2,778.84

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Solution

The fourth proportional to 3,711.96, 5,118.30 and 2,778.84 is: 3,831.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.96 : 5,118.30 = 2,778.84 : x
  2. Step 2: Convert to fraction form
    3,711.96/5,118.30 = 2,778.84/x
  3. Step 3: Cross multiply
    3,711.96x = 5,118.30 × 2,778.84
  4. Step 4: Simplify right side
    3,711.96x = 14,222,936.77
  5. Step 5: Solve for x
    x = 14,222,936.77/3,711.96
  6. Step 6: Final answer
    x = 3,831.65

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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.