Home / 1,615.17-2,422.22-519.27

Finding the Fourth Proportional to 1,615.17, 2,422.22 and 519.27

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Solution

The fourth proportional to 1,615.17, 2,422.22 and 519.27 is: 778.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.17 : 2,422.22 = 519.27 : x
  2. Step 2: Convert to fraction form
    1,615.17/2,422.22 = 519.27/x
  3. Step 3: Cross multiply
    1,615.17x = 2,422.22 × 519.27
  4. Step 4: Simplify right side
    1,615.17x = 1,257,786.18
  5. Step 5: Solve for x
    x = 1,257,786.18/1,615.17
  6. Step 6: Final answer
    x = 778.73

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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.