Home / 7,719.39-11,572.22-2,787.95

Finding the Fourth Proportional to 7,719.39, 11,572.22 and 2,787.95

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Solution

The fourth proportional to 7,719.39, 11,572.22 and 2,787.95 is: 4,179.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.39 : 11,572.22 = 2,787.95 : x
  2. Step 2: Convert to fraction form
    7,719.39/11,572.22 = 2,787.95/x
  3. Step 3: Cross multiply
    7,719.39x = 11,572.22 × 2,787.95
  4. Step 4: Simplify right side
    7,719.39x = 32,262,806.65
  5. Step 5: Solve for x
    x = 32,262,806.65/7,719.39
  6. Step 6: Final answer
    x = 4,179.45

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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.