Home / 5,380.36-8,069.28-1,631.44

Finding the Fourth Proportional to 5,380.36, 8,069.28 and 1,631.44

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Solution

The fourth proportional to 5,380.36, 8,069.28 and 1,631.44 is: 2,446.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.36 : 8,069.28 = 1,631.44 : x
  2. Step 2: Convert to fraction form
    5,380.36/8,069.28 = 1,631.44/x
  3. Step 3: Cross multiply
    5,380.36x = 8,069.28 × 1,631.44
  4. Step 4: Simplify right side
    5,380.36x = 13,164,546.16
  5. Step 5: Solve for x
    x = 13,164,546.16/5,380.36
  6. Step 6: Final answer
    x = 2,446.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.