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Finding the Fourth Proportional to 8,975.08, 13,434.78 and 8,209.60

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Solution

The fourth proportional to 8,975.08, 13,434.78 and 8,209.60 is: 12,288.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.08 : 13,434.78 = 8,209.60 : x
  2. Step 2: Convert to fraction form
    8,975.08/13,434.78 = 8,209.60/x
  3. Step 3: Cross multiply
    8,975.08x = 13,434.78 × 8,209.60
  4. Step 4: Simplify right side
    8,975.08x = 110,294,169.89
  5. Step 5: Solve for x
    x = 110,294,169.89/8,975.08
  6. Step 6: Final answer
    x = 12,288.93

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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.