Home / 5,174.78-7,141.16-2,816.94

Finding the Fourth Proportional to 5,174.78, 7,141.16 and 2,816.94

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Solution

The fourth proportional to 5,174.78, 7,141.16 and 2,816.94 is: 3,887.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.78 : 7,141.16 = 2,816.94 : x
  2. Step 2: Convert to fraction form
    5,174.78/7,141.16 = 2,816.94/x
  3. Step 3: Cross multiply
    5,174.78x = 7,141.16 × 2,816.94
  4. Step 4: Simplify right side
    5,174.78x = 20,116,205.17
  5. Step 5: Solve for x
    x = 20,116,205.17/5,174.78
  6. Step 6: Final answer
    x = 3,887.36

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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.