Home / 5,422.50-8,134.49-1,911.69

Finding the Fourth Proportional to 5,422.50, 8,134.49 and 1,911.69

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Solution

The fourth proportional to 5,422.50, 8,134.49 and 1,911.69 is: 2,867.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.50 : 8,134.49 = 1,911.69 : x
  2. Step 2: Convert to fraction form
    5,422.50/8,134.49 = 1,911.69/x
  3. Step 3: Cross multiply
    5,422.50x = 8,134.49 × 1,911.69
  4. Step 4: Simplify right side
    5,422.50x = 15,550,627.97
  5. Step 5: Solve for x
    x = 15,550,627.97/5,422.50
  6. Step 6: Final answer
    x = 2,867.80

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Double scale
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Similar ratio
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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.