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Finding the Fourth Proportional to 9,151.72, 13,750.98 and 8,620.54

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Solution

The fourth proportional to 9,151.72, 13,750.98 and 8,620.54 is: 12,952.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,151.72 : 13,750.98 = 8,620.54 : x
  2. Step 2: Convert to fraction form
    9,151.72/13,750.98 = 8,620.54/x
  3. Step 3: Cross multiply
    9,151.72x = 13,750.98 × 8,620.54
  4. Step 4: Simplify right side
    9,151.72x = 118,540,873.13
  5. Step 5: Solve for x
    x = 118,540,873.13/9,151.72
  6. Step 6: Final answer
    x = 12,952.85

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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.