Home / 1,469.20-2,027.16-871.87

Finding the Fourth Proportional to 1,469.20, 2,027.16 and 871.87

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Solution

The fourth proportional to 1,469.20, 2,027.16 and 871.87 is: 1,202.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.20 : 2,027.16 = 871.87 : x
  2. Step 2: Convert to fraction form
    1,469.20/2,027.16 = 871.87/x
  3. Step 3: Cross multiply
    1,469.20x = 2,027.16 × 871.87
  4. Step 4: Simplify right side
    1,469.20x = 1,767,409.85
  5. Step 5: Solve for x
    x = 1,767,409.85/1,469.20
  6. Step 6: Final answer
    x = 1,202.98

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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.