Home / 2,120.31-3,180.76-733.28

Finding the Fourth Proportional to 2,120.31, 3,180.76 and 733.28

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Solution

The fourth proportional to 2,120.31, 3,180.76 and 733.28 is: 1,100.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.31 : 3,180.76 = 733.28 : x
  2. Step 2: Convert to fraction form
    2,120.31/3,180.76 = 733.28/x
  3. Step 3: Cross multiply
    2,120.31x = 3,180.76 × 733.28
  4. Step 4: Simplify right side
    2,120.31x = 2,332,368.58
  5. Step 5: Solve for x
    x = 2,332,368.58/2,120.31
  6. Step 6: Final answer
    x = 1,100.01

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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.