Home / 8,861.36-13,288.92-2,619.70

Finding the Fourth Proportional to 8,861.36, 13,288.92 and 2,619.70

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Solution

The fourth proportional to 8,861.36, 13,288.92 and 2,619.70 is: 3,928.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.36 : 13,288.92 = 2,619.70 : x
  2. Step 2: Convert to fraction form
    8,861.36/13,288.92 = 2,619.70/x
  3. Step 3: Cross multiply
    8,861.36x = 13,288.92 × 2,619.70
  4. Step 4: Simplify right side
    8,861.36x = 34,812,983.72
  5. Step 5: Solve for x
    x = 34,812,983.72/8,861.36
  6. Step 6: Final answer
    x = 3,928.63

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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.