Home / 1,612.12-2,418.39-516.10

Finding the Fourth Proportional to 1,612.12, 2,418.39 and 516.10

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Solution

The fourth proportional to 1,612.12, 2,418.39 and 516.10 is: 774.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.12 : 2,418.39 = 516.10 : x
  2. Step 2: Convert to fraction form
    1,612.12/2,418.39 = 516.10/x
  3. Step 3: Cross multiply
    1,612.12x = 2,418.39 × 516.10
  4. Step 4: Simplify right side
    1,612.12x = 1,248,116.41
  5. Step 5: Solve for x
    x = 1,248,116.41/1,612.12
  6. Step 6: Final answer
    x = 774.21

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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.