Home / 1,938.75-2,675.48-1,099.47

Finding the Fourth Proportional to 1,938.75, 2,675.48 and 1,099.47

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Solution

The fourth proportional to 1,938.75, 2,675.48 and 1,099.47 is: 1,517.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.75 : 2,675.48 = 1,099.47 : x
  2. Step 2: Convert to fraction form
    1,938.75/2,675.48 = 1,099.47/x
  3. Step 3: Cross multiply
    1,938.75x = 2,675.48 × 1,099.47
  4. Step 4: Simplify right side
    1,938.75x = 2,941,604.50
  5. Step 5: Solve for x
    x = 2,941,604.50/1,938.75
  6. Step 6: Final answer
    x = 1,517.27

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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.