Home / 8,719.29-13,077.55-3,787.61

Finding the Fourth Proportional to 8,719.29, 13,077.55 and 3,787.61

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Solution

The fourth proportional to 8,719.29, 13,077.55 and 3,787.61 is: 5,680.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.29 : 13,077.55 = 3,787.61 : x
  2. Step 2: Convert to fraction form
    8,719.29/13,077.55 = 3,787.61/x
  3. Step 3: Cross multiply
    8,719.29x = 13,077.55 × 3,787.61
  4. Step 4: Simplify right side
    8,719.29x = 49,532,659.16
  5. Step 5: Solve for x
    x = 49,532,659.16/8,719.29
  6. Step 6: Final answer
    x = 5,680.81

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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.