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Finding the Fourth Proportional to 8,266.78, 12,401.98 and 2,719.90

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Solution

The fourth proportional to 8,266.78, 12,401.98 and 2,719.90 is: 4,080.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,266.78 : 12,401.98 = 2,719.90 : x
  2. Step 2: Convert to fraction form
    8,266.78/12,401.98 = 2,719.90/x
  3. Step 3: Cross multiply
    8,266.78x = 12,401.98 × 2,719.90
  4. Step 4: Simplify right side
    8,266.78x = 33,732,145.40
  5. Step 5: Solve for x
    x = 33,732,145.40/8,266.78
  6. Step 6: Final answer
    x = 4,080.45

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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.