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Finding the Fourth Proportional to 8,948.45, 12,360.49 and 6,811

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Solution

The fourth proportional to 8,948.45, 12,360.49 and 6,811 is: 9,408.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,948.45 : 12,360.49 = 6,811 : x
  2. Step 2: Convert to fraction form
    8,948.45/12,360.49 = 6,811/x
  3. Step 3: Cross multiply
    8,948.45x = 12,360.49 × 6,811
  4. Step 4: Simplify right side
    8,948.45x = 84,187,297.39
  5. Step 5: Solve for x
    x = 84,187,297.39/8,948.45
  6. Step 6: Final answer
    x = 9,408.03

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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.