Home / 3,905.97-5,390.93-3,776.22

Finding the Fourth Proportional to 3,905.97, 5,390.93 and 3,776.22

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Solution

The fourth proportional to 3,905.97, 5,390.93 and 3,776.22 is: 5,211.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.97 : 5,390.93 = 3,776.22 : x
  2. Step 2: Convert to fraction form
    3,905.97/5,390.93 = 3,776.22/x
  3. Step 3: Cross multiply
    3,905.97x = 5,390.93 × 3,776.22
  4. Step 4: Simplify right side
    3,905.97x = 20,357,318.80
  5. Step 5: Solve for x
    x = 20,357,318.80/3,905.97
  6. Step 6: Final answer
    x = 5,211.85

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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.