Home / 2,110.36-3,165.95-811.73

Finding the Fourth Proportional to 2,110.36, 3,165.95 and 811.73

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Solution

The fourth proportional to 2,110.36, 3,165.95 and 811.73 is: 1,217.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.36 : 3,165.95 = 811.73 : x
  2. Step 2: Convert to fraction form
    2,110.36/3,165.95 = 811.73/x
  3. Step 3: Cross multiply
    2,110.36x = 3,165.95 × 811.73
  4. Step 4: Simplify right side
    2,110.36x = 2,569,896.59
  5. Step 5: Solve for x
    x = 2,569,896.59/2,110.36
  6. Step 6: Final answer
    x = 1,217.75

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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.