Home / 3,937.21-5,438.54-2,940.76

Finding the Fourth Proportional to 3,937.21, 5,438.54 and 2,940.76

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Solution

The fourth proportional to 3,937.21, 5,438.54 and 2,940.76 is: 4,062.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.21 : 5,438.54 = 2,940.76 : x
  2. Step 2: Convert to fraction form
    3,937.21/5,438.54 = 2,940.76/x
  3. Step 3: Cross multiply
    3,937.21x = 5,438.54 × 2,940.76
  4. Step 4: Simplify right side
    3,937.21x = 15,993,398.99
  5. Step 5: Solve for x
    x = 15,993,398.99/3,937.21
  6. Step 6: Final answer
    x = 4,062.12

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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.