Home / 7,837.09-10,812.34-5,149.75

Finding the Fourth Proportional to 7,837.09, 10,812.34 and 5,149.75

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Solution

The fourth proportional to 7,837.09, 10,812.34 and 5,149.75 is: 7,104.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,837.09 : 10,812.34 = 5,149.75 : x
  2. Step 2: Convert to fraction form
    7,837.09/10,812.34 = 5,149.75/x
  3. Step 3: Cross multiply
    7,837.09x = 10,812.34 × 5,149.75
  4. Step 4: Simplify right side
    7,837.09x = 55,680,847.92
  5. Step 5: Solve for x
    x = 55,680,847.92/7,837.09
  6. Step 6: Final answer
    x = 7,104.79

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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.