Home / 7,912.84-11,869.26-2,718.76

Finding the Fourth Proportional to 7,912.84, 11,869.26 and 2,718.76

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Solution

The fourth proportional to 7,912.84, 11,869.26 and 2,718.76 is: 4,078.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.84 : 11,869.26 = 2,718.76 : x
  2. Step 2: Convert to fraction form
    7,912.84/11,869.26 = 2,718.76/x
  3. Step 3: Cross multiply
    7,912.84x = 11,869.26 × 2,718.76
  4. Step 4: Simplify right side
    7,912.84x = 32,269,669.32
  5. Step 5: Solve for x
    x = 32,269,669.32/7,912.84
  6. Step 6: Final answer
    x = 4,078.14

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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.