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Finding the Fourth Proportional to 5,174.87, 7,141.10 and 2,817.01

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Solution

The fourth proportional to 5,174.87, 7,141.10 and 2,817.01 is: 3,887.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.87 : 7,141.10 = 2,817.01 : x
  2. Step 2: Convert to fraction form
    5,174.87/7,141.10 = 2,817.01/x
  3. Step 3: Cross multiply
    5,174.87x = 7,141.10 × 2,817.01
  4. Step 4: Simplify right side
    5,174.87x = 20,116,550.11
  5. Step 5: Solve for x
    x = 20,116,550.11/5,174.87
  6. Step 6: Final answer
    x = 3,887.35

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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.