Home / 3,825.78-5,278.95-2,253.66

Finding the Fourth Proportional to 3,825.78, 5,278.95 and 2,253.66

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Solution

The fourth proportional to 3,825.78, 5,278.95 and 2,253.66 is: 3,109.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,825.78 : 5,278.95 = 2,253.66 : x
  2. Step 2: Convert to fraction form
    3,825.78/5,278.95 = 2,253.66/x
  3. Step 3: Cross multiply
    3,825.78x = 5,278.95 × 2,253.66
  4. Step 4: Simplify right side
    3,825.78x = 11,896,958.46
  5. Step 5: Solve for x
    x = 11,896,958.46/3,825.78
  6. Step 6: Final answer
    x = 3,109.68

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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.