Home / 2,092.95-3,140.63-938.70

Finding the Fourth Proportional to 2,092.95, 3,140.63 and 938.70

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Solution

The fourth proportional to 2,092.95, 3,140.63 and 938.70 is: 1,408.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.95 : 3,140.63 = 938.70 : x
  2. Step 2: Convert to fraction form
    2,092.95/3,140.63 = 938.70/x
  3. Step 3: Cross multiply
    2,092.95x = 3,140.63 × 938.70
  4. Step 4: Simplify right side
    2,092.95x = 2,948,109.38
  5. Step 5: Solve for x
    x = 2,948,109.38/2,092.95
  6. Step 6: Final answer
    x = 1,408.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.