Home / 2,092.14-3,138.21-859.66

Finding the Fourth Proportional to 2,092.14, 3,138.21 and 859.66

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Solution

The fourth proportional to 2,092.14, 3,138.21 and 859.66 is: 1,289.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.14 : 3,138.21 = 859.66 : x
  2. Step 2: Convert to fraction form
    2,092.14/3,138.21 = 859.66/x
  3. Step 3: Cross multiply
    2,092.14x = 3,138.21 × 859.66
  4. Step 4: Simplify right side
    2,092.14x = 2,697,785.76
  5. Step 5: Solve for x
    x = 2,697,785.76/2,092.14
  6. Step 6: Final answer
    x = 1,289.49

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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.