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Finding the Fourth Proportional to 6,749.70, 10,123.20 and 3,239.70

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Solution

The fourth proportional to 6,749.70, 10,123.20 and 3,239.70 is: 4,858.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,749.70 : 10,123.20 = 3,239.70 : x
  2. Step 2: Convert to fraction form
    6,749.70/10,123.20 = 3,239.70/x
  3. Step 3: Cross multiply
    6,749.70x = 10,123.20 × 3,239.70
  4. Step 4: Simplify right side
    6,749.70x = 32,796,131.04
  5. Step 5: Solve for x
    x = 32,796,131.04/6,749.70
  6. Step 6: Final answer
    x = 4,858.90

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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.