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Finding the Fourth Proportional to 7,131.95, 10,697.94 and 3,231.80

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Solution

The fourth proportional to 7,131.95, 10,697.94 and 3,231.80 is: 4,847.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.95 : 10,697.94 = 3,231.80 : x
  2. Step 2: Convert to fraction form
    7,131.95/10,697.94 = 3,231.80/x
  3. Step 3: Cross multiply
    7,131.95x = 10,697.94 × 3,231.80
  4. Step 4: Simplify right side
    7,131.95x = 34,573,549.00
  5. Step 5: Solve for x
    x = 34,573,549.00/7,131.95
  6. Step 6: Final answer
    x = 4,847.70

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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.