Home / 1,938.97-2,674.34-1,230.20

Finding the Fourth Proportional to 1,938.97, 2,674.34 and 1,230.20

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Solution

The fourth proportional to 1,938.97, 2,674.34 and 1,230.20 is: 1,696.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.97 : 2,674.34 = 1,230.20 : x
  2. Step 2: Convert to fraction form
    1,938.97/2,674.34 = 1,230.20/x
  3. Step 3: Cross multiply
    1,938.97x = 2,674.34 × 1,230.20
  4. Step 4: Simplify right side
    1,938.97x = 3,289,963.31
  5. Step 5: Solve for x
    x = 3,289,963.31/1,938.97
  6. Step 6: Final answer
    x = 1,696.76

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Double scale
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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.