Home / 5,385.38-7,427.70-3,898.22

Finding the Fourth Proportional to 5,385.38, 7,427.70 and 3,898.22

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Solution

The fourth proportional to 5,385.38, 7,427.70 and 3,898.22 is: 5,376.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.38 : 7,427.70 = 3,898.22 : x
  2. Step 2: Convert to fraction form
    5,385.38/7,427.70 = 3,898.22/x
  3. Step 3: Cross multiply
    5,385.38x = 7,427.70 × 3,898.22
  4. Step 4: Simplify right side
    5,385.38x = 28,954,808.69
  5. Step 5: Solve for x
    x = 28,954,808.69/5,385.38
  6. Step 6: Final answer
    x = 5,376.56

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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.