Home / 7,719.16-11,571.86-2,787.70

Finding the Fourth Proportional to 7,719.16, 11,571.86 and 2,787.70

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Solution

The fourth proportional to 7,719.16, 11,571.86 and 2,787.70 is: 4,179.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.16 : 11,571.86 = 2,787.70 : x
  2. Step 2: Convert to fraction form
    7,719.16/11,571.86 = 2,787.70/x
  3. Step 3: Cross multiply
    7,719.16x = 11,571.86 × 2,787.70
  4. Step 4: Simplify right side
    7,719.16x = 32,258,802.32
  5. Step 5: Solve for x
    x = 32,258,802.32/7,719.16
  6. Step 6: Final answer
    x = 4,179.06

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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.