Home / 9,371.06-12,921.49-6,388.66

Finding the Fourth Proportional to 9,371.06, 12,921.49 and 6,388.66

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Solution

The fourth proportional to 9,371.06, 12,921.49 and 6,388.66 is: 8,809.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,371.06 : 12,921.49 = 6,388.66 : x
  2. Step 2: Convert to fraction form
    9,371.06/12,921.49 = 6,388.66/x
  3. Step 3: Cross multiply
    9,371.06x = 12,921.49 × 6,388.66
  4. Step 4: Simplify right side
    9,371.06x = 82,551,006.30
  5. Step 5: Solve for x
    x = 82,551,006.30/9,371.06
  6. Step 6: Final answer
    x = 8,809.14

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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.