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Finding the Fourth Proportional to 8,806.90, 13,205.55 and 3,606.90

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Solution

The fourth proportional to 8,806.90, 13,205.55 and 3,606.90 is: 5,408.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806.90 : 13,205.55 = 3,606.90 : x
  2. Step 2: Convert to fraction form
    8,806.90/13,205.55 = 3,606.90/x
  3. Step 3: Cross multiply
    8,806.90x = 13,205.55 × 3,606.90
  4. Step 4: Simplify right side
    8,806.90x = 47,631,098.30
  5. Step 5: Solve for x
    x = 47,631,098.30/8,806.90
  6. Step 6: Final answer
    x = 5,408.38

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1.5x scale

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.