Home / 3,902.95-5,385.98-2,134.55

Finding the Fourth Proportional to 3,902.95, 5,385.98 and 2,134.55

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Solution

The fourth proportional to 3,902.95, 5,385.98 and 2,134.55 is: 2,945.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.95 : 5,385.98 = 2,134.55 : x
  2. Step 2: Convert to fraction form
    3,902.95/5,385.98 = 2,134.55/x
  3. Step 3: Cross multiply
    3,902.95x = 5,385.98 × 2,134.55
  4. Step 4: Simplify right side
    3,902.95x = 11,496,648.95
  5. Step 5: Solve for x
    x = 11,496,648.95/3,902.95
  6. Step 6: Final answer
    x = 2,945.63

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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.