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Finding the Fourth Proportional to 8,266.81, 12,399 and 2,719.93

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Solution

The fourth proportional to 8,266.81, 12,399 and 2,719.93 is: 4,079.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,266.81 : 12,399 = 2,719.93 : x
  2. Step 2: Convert to fraction form
    8,266.81/12,399 = 2,719.93/x
  3. Step 3: Cross multiply
    8,266.81x = 12,399 × 2,719.93
  4. Step 4: Simplify right side
    8,266.81x = 33,724,412.07
  5. Step 5: Solve for x
    x = 33,724,412.07/8,266.81
  6. Step 6: Final answer
    x = 4,079.50

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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.