Home / 2,110.48-3,165.38-811.64

Finding the Fourth Proportional to 2,110.48, 3,165.38 and 811.64

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Solution

The fourth proportional to 2,110.48, 3,165.38 and 811.64 is: 1,217.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.48 : 3,165.38 = 811.64 : x
  2. Step 2: Convert to fraction form
    2,110.48/3,165.38 = 811.64/x
  3. Step 3: Cross multiply
    2,110.48x = 3,165.38 × 811.64
  4. Step 4: Simplify right side
    2,110.48x = 2,569,149.02
  5. Step 5: Solve for x
    x = 2,569,149.02/2,110.48
  6. Step 6: Final answer
    x = 1,217.33

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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.