Home / 3,977.76-5,491.08-3,480.96

Finding the Fourth Proportional to 3,977.76, 5,491.08 and 3,480.96

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Solution

The fourth proportional to 3,977.76, 5,491.08 and 3,480.96 is: 4,805.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.76 : 5,491.08 = 3,480.96 : x
  2. Step 2: Convert to fraction form
    3,977.76/5,491.08 = 3,480.96/x
  3. Step 3: Cross multiply
    3,977.76x = 5,491.08 × 3,480.96
  4. Step 4: Simplify right side
    3,977.76x = 19,114,229.84
  5. Step 5: Solve for x
    x = 19,114,229.84/3,977.76
  6. Step 6: Final answer
    x = 4,805.27

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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.