Home / 8,259.20-12,388.80-2,415.81

Finding the Fourth Proportional to 8,259.20, 12,388.80 and 2,415.81

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Solution

The fourth proportional to 8,259.20, 12,388.80 and 2,415.81 is: 3,623.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259.20 : 12,388.80 = 2,415.81 : x
  2. Step 2: Convert to fraction form
    8,259.20/12,388.80 = 2,415.81/x
  3. Step 3: Cross multiply
    8,259.20x = 12,388.80 × 2,415.81
  4. Step 4: Simplify right side
    8,259.20x = 29,928,986.93
  5. Step 5: Solve for x
    x = 29,928,986.93/8,259.20
  6. Step 6: Final answer
    x = 3,623.72

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Similar ratio
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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.