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Finding the Fourth Proportional to 8,266.69, 11,408.13 and 4,489.90

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Solution

The fourth proportional to 8,266.69, 11,408.13 and 4,489.90 is: 6,196.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,266.69 : 11,408.13 = 4,489.90 : x
  2. Step 2: Convert to fraction form
    8,266.69/11,408.13 = 4,489.90/x
  3. Step 3: Cross multiply
    8,266.69x = 11,408.13 × 4,489.90
  4. Step 4: Simplify right side
    8,266.69x = 51,221,362.89
  5. Step 5: Solve for x
    x = 51,221,362.89/8,266.69
  6. Step 6: Final answer
    x = 6,196.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.