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Finding the Fourth Proportional to 7,239.87, 10,861.16 and 4,997.88

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Solution

The fourth proportional to 7,239.87, 10,861.16 and 4,997.88 is: 7,497.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.87 : 10,861.16 = 4,997.88 : x
  2. Step 2: Convert to fraction form
    7,239.87/10,861.16 = 4,997.88/x
  3. Step 3: Cross multiply
    7,239.87x = 10,861.16 × 4,997.88
  4. Step 4: Simplify right side
    7,239.87x = 54,282,749.35
  5. Step 5: Solve for x
    x = 54,282,749.35/7,239.87
  6. Step 6: Final answer
    x = 7,497.75

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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.