Home / 6,721.38-9,275.31-3,889.22

Finding the Fourth Proportional to 6,721.38, 9,275.31 and 3,889.22

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Solution

The fourth proportional to 6,721.38, 9,275.31 and 3,889.22 is: 5,367.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.38 : 9,275.31 = 3,889.22 : x
  2. Step 2: Convert to fraction form
    6,721.38/9,275.31 = 3,889.22/x
  3. Step 3: Cross multiply
    6,721.38x = 9,275.31 × 3,889.22
  4. Step 4: Simplify right side
    6,721.38x = 36,073,674.78
  5. Step 5: Solve for x
    x = 36,073,674.78/6,721.38
  6. Step 6: Final answer
    x = 5,367.00

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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.