Home / 3,931.99-5,428.76-2,736.63

Finding the Fourth Proportional to 3,931.99, 5,428.76 and 2,736.63

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Solution

The fourth proportional to 3,931.99, 5,428.76 and 2,736.63 is: 3,778.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.99 : 5,428.76 = 2,736.63 : x
  2. Step 2: Convert to fraction form
    3,931.99/5,428.76 = 2,736.63/x
  3. Step 3: Cross multiply
    3,931.99x = 5,428.76 × 2,736.63
  4. Step 4: Simplify right side
    3,931.99x = 14,856,493.80
  5. Step 5: Solve for x
    x = 14,856,493.80/3,931.99
  6. Step 6: Final answer
    x = 3,778.37

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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.