Home / 2,120.52-3,180.78-1,244.36

Finding the Fourth Proportional to 2,120.52, 3,180.78 and 1,244.36

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Solution

The fourth proportional to 2,120.52, 3,180.78 and 1,244.36 is: 1,866.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.52 : 3,180.78 = 1,244.36 : x
  2. Step 2: Convert to fraction form
    2,120.52/3,180.78 = 1,244.36/x
  3. Step 3: Cross multiply
    2,120.52x = 3,180.78 × 1,244.36
  4. Step 4: Simplify right side
    2,120.52x = 3,958,019.50
  5. Step 5: Solve for x
    x = 3,958,019.50/2,120.52
  6. Step 6: Final answer
    x = 1,866.53

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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.