Home / 1,418.06-2,127.29-540.50

Finding the Fourth Proportional to 1,418.06, 2,127.29 and 540.50

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Solution

The fourth proportional to 1,418.06, 2,127.29 and 540.50 is: 810.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.06 : 2,127.29 = 540.50 : x
  2. Step 2: Convert to fraction form
    1,418.06/2,127.29 = 540.50/x
  3. Step 3: Cross multiply
    1,418.06x = 2,127.29 × 540.50
  4. Step 4: Simplify right side
    1,418.06x = 1,149,786.91
  5. Step 5: Solve for x
    x = 1,149,786.91/1,418.06
  6. Step 6: Final answer
    x = 810.82

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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.