Home / 5,190.15-7,161.91-2,951.90

Finding the Fourth Proportional to 5,190.15, 7,161.91 and 2,951.90

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Solution

The fourth proportional to 5,190.15, 7,161.91 and 2,951.90 is: 4,073.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.15 : 7,161.91 = 2,951.90 : x
  2. Step 2: Convert to fraction form
    5,190.15/7,161.91 = 2,951.90/x
  3. Step 3: Cross multiply
    5,190.15x = 7,161.91 × 2,951.90
  4. Step 4: Simplify right side
    5,190.15x = 21,141,242.13
  5. Step 5: Solve for x
    x = 21,141,242.13/5,190.15
  6. Step 6: Final answer
    x = 4,073.34

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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.