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Finding the Fourth Proportional to 8,805.72, 13,209.80 and 3,610.38

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Solution

The fourth proportional to 8,805.72, 13,209.80 and 3,610.38 is: 5,416.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.72 : 13,209.80 = 3,610.38 : x
  2. Step 2: Convert to fraction form
    8,805.72/13,209.80 = 3,610.38/x
  3. Step 3: Cross multiply
    8,805.72x = 13,209.80 × 3,610.38
  4. Step 4: Simplify right side
    8,805.72x = 47,692,397.72
  5. Step 5: Solve for x
    x = 47,692,397.72/8,805.72
  6. Step 6: Final answer
    x = 5,416.07

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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.