Home / 2,108.13-3,163.20-810.51

Finding the Fourth Proportional to 2,108.13, 3,163.20 and 810.51

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Solution

The fourth proportional to 2,108.13, 3,163.20 and 810.51 is: 1,216.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.13 : 3,163.20 = 810.51 : x
  2. Step 2: Convert to fraction form
    2,108.13/3,163.20 = 810.51/x
  3. Step 3: Cross multiply
    2,108.13x = 3,163.20 × 810.51
  4. Step 4: Simplify right side
    2,108.13x = 2,563,805.23
  5. Step 5: Solve for x
    x = 2,563,805.23/2,108.13
  6. Step 6: Final answer
    x = 1,216.15

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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.