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Finding the Fourth Proportional to 11,310.80, 15,610.72 and 6,835.12

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Solution

The fourth proportional to 11,310.80, 15,610.72 and 6,835.12 is: 9,433.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,310.80 : 15,610.72 = 6,835.12 : x
  2. Step 2: Convert to fraction form
    11,310.80/15,610.72 = 6,835.12/x
  3. Step 3: Cross multiply
    11,310.80x = 15,610.72 × 6,835.12
  4. Step 4: Simplify right side
    11,310.80x = 106,701,144.49
  5. Step 5: Solve for x
    x = 106,701,144.49/11,310.80
  6. Step 6: Final answer
    x = 9,433.56

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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.