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Finding the Fourth Proportional to 7,162.72, 9,884.38 and 3,975.93

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Solution

The fourth proportional to 7,162.72, 9,884.38 and 3,975.93 is: 5,486.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,162.72 : 9,884.38 = 3,975.93 : x
  2. Step 2: Convert to fraction form
    7,162.72/9,884.38 = 3,975.93/x
  3. Step 3: Cross multiply
    7,162.72x = 9,884.38 × 3,975.93
  4. Step 4: Simplify right side
    7,162.72x = 39,299,555.92
  5. Step 5: Solve for x
    x = 39,299,555.92/7,162.72
  6. Step 6: Final answer
    x = 5,486.68

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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.