Home / 8,712.80-13,069.20-3,166.33

Finding the Fourth Proportional to 8,712.80, 13,069.20 and 3,166.33

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Solution

The fourth proportional to 8,712.80, 13,069.20 and 3,166.33 is: 4,749.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.80 : 13,069.20 = 3,166.33 : x
  2. Step 2: Convert to fraction form
    8,712.80/13,069.20 = 3,166.33/x
  3. Step 3: Cross multiply
    8,712.80x = 13,069.20 × 3,166.33
  4. Step 4: Simplify right side
    8,712.80x = 41,381,334.69
  5. Step 5: Solve for x
    x = 41,381,334.69/8,712.80
  6. Step 6: Final answer
    x = 4,749.49

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Similar ratio
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1.5x scale

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.