Home / 8,270.78-12,406.76-2,724.18

Finding the Fourth Proportional to 8,270.78, 12,406.76 and 2,724.18

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Solution

The fourth proportional to 8,270.78, 12,406.76 and 2,724.18 is: 4,086.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.78 : 12,406.76 = 2,724.18 : x
  2. Step 2: Convert to fraction form
    8,270.78/12,406.76 = 2,724.18/x
  3. Step 3: Cross multiply
    8,270.78x = 12,406.76 × 2,724.18
  4. Step 4: Simplify right side
    8,270.78x = 33,798,247.46
  5. Step 5: Solve for x
    x = 33,798,247.46/8,270.78
  6. Step 6: Final answer
    x = 4,086.46

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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.