Home / 3,940.45-5,438.75-2,262.74

Finding the Fourth Proportional to 3,940.45, 5,438.75 and 2,262.74

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Solution

The fourth proportional to 3,940.45, 5,438.75 and 2,262.74 is: 3,123.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.45 : 5,438.75 = 2,262.74 : x
  2. Step 2: Convert to fraction form
    3,940.45/5,438.75 = 2,262.74/x
  3. Step 3: Cross multiply
    3,940.45x = 5,438.75 × 2,262.74
  4. Step 4: Simplify right side
    3,940.45x = 12,306,438.67
  5. Step 5: Solve for x
    x = 12,306,438.67/3,940.45
  6. Step 6: Final answer
    x = 3,123.11

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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.