Home / 5,190.45-7,162.79-2,832.81

Finding the Fourth Proportional to 5,190.45, 7,162.79 and 2,832.81

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Solution

The fourth proportional to 5,190.45, 7,162.79 and 2,832.81 is: 3,909.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.45 : 7,162.79 = 2,832.81 : x
  2. Step 2: Convert to fraction form
    5,190.45/7,162.79 = 2,832.81/x
  3. Step 3: Cross multiply
    5,190.45x = 7,162.79 × 2,832.81
  4. Step 4: Simplify right side
    5,190.45x = 20,290,823.14
  5. Step 5: Solve for x
    x = 20,290,823.14/5,190.45
  6. Step 6: Final answer
    x = 3,909.26

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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.