Home / 8,309.21-12,459.65-2,760.61

Finding the Fourth Proportional to 8,309.21, 12,459.65 and 2,760.61

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Solution

The fourth proportional to 8,309.21, 12,459.65 and 2,760.61 is: 4,139.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,309.21 : 12,459.65 = 2,760.61 : x
  2. Step 2: Convert to fraction form
    8,309.21/12,459.65 = 2,760.61/x
  3. Step 3: Cross multiply
    8,309.21x = 12,459.65 × 2,760.61
  4. Step 4: Simplify right side
    8,309.21x = 34,396,220.58
  5. Step 5: Solve for x
    x = 34,396,220.58/8,309.21
  6. Step 6: Final answer
    x = 4,139.53

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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.