Home / 8,811.36-13,215.96-3,880.08

Finding the Fourth Proportional to 8,811.36, 13,215.96 and 3,880.08

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Solution

The fourth proportional to 8,811.36, 13,215.96 and 3,880.08 is: 5,819.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.36 : 13,215.96 = 3,880.08 : x
  2. Step 2: Convert to fraction form
    8,811.36/13,215.96 = 3,880.08/x
  3. Step 3: Cross multiply
    8,811.36x = 13,215.96 × 3,880.08
  4. Step 4: Simplify right side
    8,811.36x = 51,278,982.08
  5. Step 5: Solve for x
    x = 51,278,982.08/8,811.36
  6. Step 6: Final answer
    x = 5,819.64

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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.