Home / 3,913.48-5,400.71-2,211.85

Finding the Fourth Proportional to 3,913.48, 5,400.71 and 2,211.85

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Solution

The fourth proportional to 3,913.48, 5,400.71 and 2,211.85 is: 3,052.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.48 : 5,400.71 = 2,211.85 : x
  2. Step 2: Convert to fraction form
    3,913.48/5,400.71 = 2,211.85/x
  3. Step 3: Cross multiply
    3,913.48x = 5,400.71 × 2,211.85
  4. Step 4: Simplify right side
    3,913.48x = 11,945,560.41
  5. Step 5: Solve for x
    x = 11,945,560.41/3,913.48
  6. Step 6: Final answer
    x = 3,052.41

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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.