Home / 1,938.57-2,675.28-1,087.92

Finding the Fourth Proportional to 1,938.57, 2,675.28 and 1,087.92

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Solution

The fourth proportional to 1,938.57, 2,675.28 and 1,087.92 is: 1,501.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.57 : 2,675.28 = 1,087.92 : x
  2. Step 2: Convert to fraction form
    1,938.57/2,675.28 = 1,087.92/x
  3. Step 3: Cross multiply
    1,938.57x = 2,675.28 × 1,087.92
  4. Step 4: Simplify right side
    1,938.57x = 2,910,490.62
  5. Step 5: Solve for x
    x = 2,910,490.62/1,938.57
  6. Step 6: Final answer
    x = 1,501.36

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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.