Home / 3,927.56-5,420.75-2,355.89

Finding the Fourth Proportional to 3,927.56, 5,420.75 and 2,355.89

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Solution

The fourth proportional to 3,927.56, 5,420.75 and 2,355.89 is: 3,251.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.56 : 5,420.75 = 2,355.89 : x
  2. Step 2: Convert to fraction form
    3,927.56/5,420.75 = 2,355.89/x
  3. Step 3: Cross multiply
    3,927.56x = 5,420.75 × 2,355.89
  4. Step 4: Simplify right side
    3,927.56x = 12,770,651.83
  5. Step 5: Solve for x
    x = 12,770,651.83/3,927.56
  6. Step 6: Final answer
    x = 3,251.55

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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.