Home / 1,615.17-2,418.20-1,028.72

Finding the Fourth Proportional to 1,615.17, 2,418.20 and 1,028.72

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Solution

The fourth proportional to 1,615.17, 2,418.20 and 1,028.72 is: 1,540.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.17 : 2,418.20 = 1,028.72 : x
  2. Step 2: Convert to fraction form
    1,615.17/2,418.20 = 1,028.72/x
  3. Step 3: Cross multiply
    1,615.17x = 2,418.20 × 1,028.72
  4. Step 4: Simplify right side
    1,615.17x = 2,487,655.46
  5. Step 5: Solve for x
    x = 2,487,655.46/1,615.17
  6. Step 6: Final answer
    x = 1,540.18

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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.