Home / 5,174.76-7,141.20-2,816.90

Finding the Fourth Proportional to 5,174.76, 7,141.20 and 2,816.90

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Solution

The fourth proportional to 5,174.76, 7,141.20 and 2,816.90 is: 3,887.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.76 : 7,141.20 = 2,816.90 : x
  2. Step 2: Convert to fraction form
    5,174.76/7,141.20 = 2,816.90/x
  3. Step 3: Cross multiply
    5,174.76x = 7,141.20 × 2,816.90
  4. Step 4: Simplify right side
    5,174.76x = 20,116,046.28
  5. Step 5: Solve for x
    x = 20,116,046.28/5,174.76
  6. Step 6: Final answer
    x = 3,887.34

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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.