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Finding the Fourth Proportional to 7,405.03, 10,198.18 and 7,381.96

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Solution

The fourth proportional to 7,405.03, 10,198.18 and 7,381.96 is: 10,166.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.03 : 10,198.18 = 7,381.96 : x
  2. Step 2: Convert to fraction form
    7,405.03/10,198.18 = 7,381.96/x
  3. Step 3: Cross multiply
    7,405.03x = 10,198.18 × 7,381.96
  4. Step 4: Simplify right side
    7,405.03x = 75,282,556.83
  5. Step 5: Solve for x
    x = 75,282,556.83/7,405.03
  6. Step 6: Final answer
    x = 10,166.41

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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.