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Finding the Fourth Proportional to 7,321.70, 10,103.73 and 4,135.13

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Solution

The fourth proportional to 7,321.70, 10,103.73 and 4,135.13 is: 5,706.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.70 : 10,103.73 = 4,135.13 : x
  2. Step 2: Convert to fraction form
    7,321.70/10,103.73 = 4,135.13/x
  3. Step 3: Cross multiply
    7,321.70x = 10,103.73 × 4,135.13
  4. Step 4: Simplify right side
    7,321.70x = 41,780,237.03
  5. Step 5: Solve for x
    x = 41,780,237.03/7,321.70
  6. Step 6: Final answer
    x = 5,706.36

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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.