Home / 9,121.41-13,688.19-3,278.07

Finding the Fourth Proportional to 9,121.41, 13,688.19 and 3,278.07

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Solution

The fourth proportional to 9,121.41, 13,688.19 and 3,278.07 is: 4,919.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.41 : 13,688.19 = 3,278.07 : x
  2. Step 2: Convert to fraction form
    9,121.41/13,688.19 = 3,278.07/x
  3. Step 3: Cross multiply
    9,121.41x = 13,688.19 × 3,278.07
  4. Step 4: Simplify right side
    9,121.41x = 44,870,844.99
  5. Step 5: Solve for x
    x = 44,870,844.99/9,121.41
  6. Step 6: Final answer
    x = 4,919.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.