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Finding the Fourth Proportional to 5,172.92, 7,759.68 and 1,474.87

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Solution

The fourth proportional to 5,172.92, 7,759.68 and 1,474.87 is: 2,212.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.92 : 7,759.68 = 1,474.87 : x
  2. Step 2: Convert to fraction form
    5,172.92/7,759.68 = 1,474.87/x
  3. Step 3: Cross multiply
    5,172.92x = 7,759.68 × 1,474.87
  4. Step 4: Simplify right side
    5,172.92x = 11,444,473.07
  5. Step 5: Solve for x
    x = 11,444,473.07/5,172.92
  6. Step 6: Final answer
    x = 2,212.38

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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.