Home / 3,927.76-5,420.70-2,355.54

Finding the Fourth Proportional to 3,927.76, 5,420.70 and 2,355.54

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Solution

The fourth proportional to 3,927.76, 5,420.70 and 2,355.54 is: 3,250.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.76 : 5,420.70 = 2,355.54 : x
  2. Step 2: Convert to fraction form
    3,927.76/5,420.70 = 2,355.54/x
  3. Step 3: Cross multiply
    3,927.76x = 5,420.70 × 2,355.54
  4. Step 4: Simplify right side
    3,927.76x = 12,768,675.68
  5. Step 5: Solve for x
    x = 12,768,675.68/3,927.76
  6. Step 6: Final answer
    x = 3,250.88

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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.