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Finding the Fourth Proportional to 7,015.68, 10,520.22 and 3,727.92

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Solution

The fourth proportional to 7,015.68, 10,520.22 and 3,727.92 is: 5,590.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.68 : 10,520.22 = 3,727.92 : x
  2. Step 2: Convert to fraction form
    7,015.68/10,520.22 = 3,727.92/x
  3. Step 3: Cross multiply
    7,015.68x = 10,520.22 × 3,727.92
  4. Step 4: Simplify right side
    7,015.68x = 39,218,538.54
  5. Step 5: Solve for x
    x = 39,218,538.54/7,015.68
  6. Step 6: Final answer
    x = 5,590.13

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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.