Home / 3,927.68-5,420.52-2,355.74

Finding the Fourth Proportional to 3,927.68, 5,420.52 and 2,355.74

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Solution

The fourth proportional to 3,927.68, 5,420.52 and 2,355.74 is: 3,251.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.68 : 5,420.52 = 2,355.74 : x
  2. Step 2: Convert to fraction form
    3,927.68/5,420.52 = 2,355.74/x
  3. Step 3: Cross multiply
    3,927.68x = 5,420.52 × 2,355.74
  4. Step 4: Simplify right side
    3,927.68x = 12,769,335.78
  5. Step 5: Solve for x
    x = 12,769,335.78/3,927.68
  6. Step 6: Final answer
    x = 3,251.11

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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.