Home / 6,721.85-9,274.79-3,926.81

Finding the Fourth Proportional to 6,721.85, 9,274.79 and 3,926.81

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Solution

The fourth proportional to 6,721.85, 9,274.79 and 3,926.81 is: 5,418.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.85 : 9,274.79 = 3,926.81 : x
  2. Step 2: Convert to fraction form
    6,721.85/9,274.79 = 3,926.81/x
  3. Step 3: Cross multiply
    6,721.85x = 9,274.79 × 3,926.81
  4. Step 4: Simplify right side
    6,721.85x = 36,420,301.56
  5. Step 5: Solve for x
    x = 36,420,301.56/6,721.85
  6. Step 6: Final answer
    x = 5,418.20

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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.