Home / 7,986.16-11,981.20-2,439.60

Finding the Fourth Proportional to 7,986.16, 11,981.20 and 2,439.60

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Solution

The fourth proportional to 7,986.16, 11,981.20 and 2,439.60 is: 3,660.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.16 : 11,981.20 = 2,439.60 : x
  2. Step 2: Convert to fraction form
    7,986.16/11,981.20 = 2,439.60/x
  3. Step 3: Cross multiply
    7,986.16x = 11,981.20 × 2,439.60
  4. Step 4: Simplify right side
    7,986.16x = 29,229,335.52
  5. Step 5: Solve for x
    x = 29,229,335.52/7,986.16
  6. Step 6: Final answer
    x = 3,660.00

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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.