Home / 2,092.27-3,138.40-858.81

Finding the Fourth Proportional to 2,092.27, 3,138.40 and 858.81

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Solution

The fourth proportional to 2,092.27, 3,138.40 and 858.81 is: 1,288.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.27 : 3,138.40 = 858.81 : x
  2. Step 2: Convert to fraction form
    2,092.27/3,138.40 = 858.81/x
  3. Step 3: Cross multiply
    2,092.27x = 3,138.40 × 858.81
  4. Step 4: Simplify right side
    2,092.27x = 2,695,289.30
  5. Step 5: Solve for x
    x = 2,695,289.30/2,092.27
  6. Step 6: Final answer
    x = 1,288.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.