Home / 1,938.91-2,675.73-1,099.57

Finding the Fourth Proportional to 1,938.91, 2,675.73 and 1,099.57

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Solution

The fourth proportional to 1,938.91, 2,675.73 and 1,099.57 is: 1,517.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.91 : 2,675.73 = 1,099.57 : x
  2. Step 2: Convert to fraction form
    1,938.91/2,675.73 = 1,099.57/x
  3. Step 3: Cross multiply
    1,938.91x = 2,675.73 × 1,099.57
  4. Step 4: Simplify right side
    1,938.91x = 2,942,152.44
  5. Step 5: Solve for x
    x = 2,942,152.44/1,938.91
  6. Step 6: Final answer
    x = 1,517.43

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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.