Home / 5,143.20-7,097.60-2,785.34

Finding the Fourth Proportional to 5,143.20, 7,097.60 and 2,785.34

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Solution

The fourth proportional to 5,143.20, 7,097.60 and 2,785.34 is: 3,843.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.20 : 7,097.60 = 2,785.34 : x
  2. Step 2: Convert to fraction form
    5,143.20/7,097.60 = 2,785.34/x
  3. Step 3: Cross multiply
    5,143.20x = 7,097.60 × 2,785.34
  4. Step 4: Simplify right side
    5,143.20x = 19,769,229.18
  5. Step 5: Solve for x
    x = 19,769,229.18/5,143.20
  6. Step 6: Final answer
    x = 3,843.76

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Half scale
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Double scale
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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.