Home / 8,736.20-13,105.40-2,813.48

Finding the Fourth Proportional to 8,736.20, 13,105.40 and 2,813.48

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Solution

The fourth proportional to 8,736.20, 13,105.40 and 2,813.48 is: 4,220.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736.20 : 13,105.40 = 2,813.48 : x
  2. Step 2: Convert to fraction form
    8,736.20/13,105.40 = 2,813.48/x
  3. Step 3: Cross multiply
    8,736.20x = 13,105.40 × 2,813.48
  4. Step 4: Simplify right side
    8,736.20x = 36,871,780.79
  5. Step 5: Solve for x
    x = 36,871,780.79/8,736.20
  6. Step 6: Final answer
    x = 4,220.57

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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.