Home / 5,190.39-7,163.01-3,420.72

Finding the Fourth Proportional to 5,190.39, 7,163.01 and 3,420.72

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Solution

The fourth proportional to 5,190.39, 7,163.01 and 3,420.72 is: 4,720.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.39 : 7,163.01 = 3,420.72 : x
  2. Step 2: Convert to fraction form
    5,190.39/7,163.01 = 3,420.72/x
  3. Step 3: Cross multiply
    5,190.39x = 7,163.01 × 3,420.72
  4. Step 4: Simplify right side
    5,190.39x = 24,502,651.57
  5. Step 5: Solve for x
    x = 24,502,651.57/5,190.39
  6. Step 6: Final answer
    x = 4,720.77

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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.