Home / 8,261.55-12,389.70-2,713.61

Finding the Fourth Proportional to 8,261.55, 12,389.70 and 2,713.61

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Solution

The fourth proportional to 8,261.55, 12,389.70 and 2,713.61 is: 4,069.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.55 : 12,389.70 = 2,713.61 : x
  2. Step 2: Convert to fraction form
    8,261.55/12,389.70 = 2,713.61/x
  3. Step 3: Cross multiply
    8,261.55x = 12,389.70 × 2,713.61
  4. Step 4: Simplify right side
    8,261.55x = 33,620,751.87
  5. Step 5: Solve for x
    x = 33,620,751.87/8,261.55
  6. Step 6: Final answer
    x = 4,069.55

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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.