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Finding the Fourth Proportional to 9,187.95, 12,679.50 and 6,884.26

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Solution

The fourth proportional to 9,187.95, 12,679.50 and 6,884.26 is: 9,500.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,187.95 : 12,679.50 = 6,884.26 : x
  2. Step 2: Convert to fraction form
    9,187.95/12,679.50 = 6,884.26/x
  3. Step 3: Cross multiply
    9,187.95x = 12,679.50 × 6,884.26
  4. Step 4: Simplify right side
    9,187.95x = 87,288,876.85
  5. Step 5: Solve for x
    x = 87,288,876.85/9,187.95
  6. Step 6: Final answer
    x = 9,500.37

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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.