Home / 1,938.90-2,675.64-1,099.62

Finding the Fourth Proportional to 1,938.90, 2,675.64 and 1,099.62

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Solution

The fourth proportional to 1,938.90, 2,675.64 and 1,099.62 is: 1,517.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.90 : 2,675.64 = 1,099.62 : x
  2. Step 2: Convert to fraction form
    1,938.90/2,675.64 = 1,099.62/x
  3. Step 3: Cross multiply
    1,938.90x = 2,675.64 × 1,099.62
  4. Step 4: Simplify right side
    1,938.90x = 2,942,187.26
  5. Step 5: Solve for x
    x = 2,942,187.26/1,938.90
  6. Step 6: Final answer
    x = 1,517.45

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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.