Home / 5,174.56-7,140.99-2,816.79

Finding the Fourth Proportional to 5,174.56, 7,140.99 and 2,816.79

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Solution

The fourth proportional to 5,174.56, 7,140.99 and 2,816.79 is: 3,887.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.56 : 7,140.99 = 2,816.79 : x
  2. Step 2: Convert to fraction form
    5,174.56/7,140.99 = 2,816.79/x
  3. Step 3: Cross multiply
    5,174.56x = 7,140.99 × 2,816.79
  4. Step 4: Simplify right side
    5,174.56x = 20,114,669.22
  5. Step 5: Solve for x
    x = 20,114,669.22/5,174.56
  6. Step 6: Final answer
    x = 3,887.22

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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.