Home / 3,927.86-5,420.76-2,249.80

Finding the Fourth Proportional to 3,927.86, 5,420.76 and 2,249.80

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Solution

The fourth proportional to 3,927.86, 5,420.76 and 2,249.80 is: 3,104.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.86 : 5,420.76 = 2,249.80 : x
  2. Step 2: Convert to fraction form
    3,927.86/5,420.76 = 2,249.80/x
  3. Step 3: Cross multiply
    3,927.86x = 5,420.76 × 2,249.80
  4. Step 4: Simplify right side
    3,927.86x = 12,195,598.74
  5. Step 5: Solve for x
    x = 12,195,598.74/3,927.86
  6. Step 6: Final answer
    x = 3,104.90

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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.