Home / 2,110.68-3,165.10-811.24

Finding the Fourth Proportional to 2,110.68, 3,165.10 and 811.24

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Solution

The fourth proportional to 2,110.68, 3,165.10 and 811.24 is: 1,216.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.68 : 3,165.10 = 811.24 : x
  2. Step 2: Convert to fraction form
    2,110.68/3,165.10 = 811.24/x
  3. Step 3: Cross multiply
    2,110.68x = 3,165.10 × 811.24
  4. Step 4: Simplify right side
    2,110.68x = 2,567,655.72
  5. Step 5: Solve for x
    x = 2,567,655.72/2,110.68
  6. Step 6: Final answer
    x = 1,216.51

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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.