Home / 5,490.69-8,236.20-2,158.80

Finding the Fourth Proportional to 5,490.69, 8,236.20 and 2,158.80

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Solution

The fourth proportional to 5,490.69, 8,236.20 and 2,158.80 is: 3,238.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.69 : 8,236.20 = 2,158.80 : x
  2. Step 2: Convert to fraction form
    5,490.69/8,236.20 = 2,158.80/x
  3. Step 3: Cross multiply
    5,490.69x = 8,236.20 × 2,158.80
  4. Step 4: Simplify right side
    5,490.69x = 17,780,308.56
  5. Step 5: Solve for x
    x = 17,780,308.56/5,490.69
  6. Step 6: Final answer
    x = 3,238.26

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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.