Home / 1,938.53-2,673.74-1,229.76

Finding the Fourth Proportional to 1,938.53, 2,673.74 and 1,229.76

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Solution

The fourth proportional to 1,938.53, 2,673.74 and 1,229.76 is: 1,696.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.53 : 2,673.74 = 1,229.76 : x
  2. Step 2: Convert to fraction form
    1,938.53/2,673.74 = 1,229.76/x
  3. Step 3: Cross multiply
    1,938.53x = 2,673.74 × 1,229.76
  4. Step 4: Simplify right side
    1,938.53x = 3,288,054.09
  5. Step 5: Solve for x
    x = 3,288,054.09/1,938.53
  6. Step 6: Final answer
    x = 1,696.16

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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.