Home / 5,174.66-7,141.17-2,816.90

Finding the Fourth Proportional to 5,174.66, 7,141.17 and 2,816.90

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Solution

The fourth proportional to 5,174.66, 7,141.17 and 2,816.90 is: 3,887.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.66 : 7,141.17 = 2,816.90 : x
  2. Step 2: Convert to fraction form
    5,174.66/7,141.17 = 2,816.90/x
  3. Step 3: Cross multiply
    5,174.66x = 7,141.17 × 2,816.90
  4. Step 4: Simplify right side
    5,174.66x = 20,115,961.77
  5. Step 5: Solve for x
    x = 20,115,961.77/5,174.66
  6. Step 6: Final answer
    x = 3,887.40

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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.