Home / 2,127.18-3,192.24-810.78

Finding the Fourth Proportional to 2,127.18, 3,192.24 and 810.78

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Solution

The fourth proportional to 2,127.18, 3,192.24 and 810.78 is: 1,216.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.18 : 3,192.24 = 810.78 : x
  2. Step 2: Convert to fraction form
    2,127.18/3,192.24 = 810.78/x
  3. Step 3: Cross multiply
    2,127.18x = 3,192.24 × 810.78
  4. Step 4: Simplify right side
    2,127.18x = 2,588,204.35
  5. Step 5: Solve for x
    x = 2,588,204.35/2,127.18
  6. Step 6: Final answer
    x = 1,216.73

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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.