Home / 8,436.33-12,638.04-5,505.75

Finding the Fourth Proportional to 8,436.33, 12,638.04 and 5,505.75

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Solution

The fourth proportional to 8,436.33, 12,638.04 and 5,505.75 is: 8,247.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.33 : 12,638.04 = 5,505.75 : x
  2. Step 2: Convert to fraction form
    8,436.33/12,638.04 = 5,505.75/x
  3. Step 3: Cross multiply
    8,436.33x = 12,638.04 × 5,505.75
  4. Step 4: Simplify right side
    8,436.33x = 69,581,899.05
  5. Step 5: Solve for x
    x = 69,581,899.05/8,436.33
  6. Step 6: Final answer
    x = 8,247.89

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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.