Home / 2,138.50-3,199.52-2,133.02

Finding the Fourth Proportional to 2,138.50, 3,199.52 and 2,133.02

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Solution

The fourth proportional to 2,138.50, 3,199.52 and 2,133.02 is: 3,191.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.50 : 3,199.52 = 2,133.02 : x
  2. Step 2: Convert to fraction form
    2,138.50/3,199.52 = 2,133.02/x
  3. Step 3: Cross multiply
    2,138.50x = 3,199.52 × 2,133.02
  4. Step 4: Simplify right side
    2,138.50x = 6,824,640.15
  5. Step 5: Solve for x
    x = 6,824,640.15/2,138.50
  6. Step 6: Final answer
    x = 3,191.32

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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.