Home / 5,190.78-7,790.10-4,163.18

Finding the Fourth Proportional to 5,190.78, 7,790.10 and 4,163.18

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Solution

The fourth proportional to 5,190.78, 7,790.10 and 4,163.18 is: 6,247.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.78 : 7,790.10 = 4,163.18 : x
  2. Step 2: Convert to fraction form
    5,190.78/7,790.10 = 4,163.18/x
  3. Step 3: Cross multiply
    5,190.78x = 7,790.10 × 4,163.18
  4. Step 4: Simplify right side
    5,190.78x = 32,431,588.52
  5. Step 5: Solve for x
    x = 32,431,588.52/5,190.78
  6. Step 6: Final answer
    x = 6,247.92

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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.