Home / 1,081.44-1,612.68-1,072.20

Finding the Fourth Proportional to 1,081.44, 1,612.68 and 1,072.20

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Solution

The fourth proportional to 1,081.44, 1,612.68 and 1,072.20 is: 1,598.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.44 : 1,612.68 = 1,072.20 : x
  2. Step 2: Convert to fraction form
    1,081.44/1,612.68 = 1,072.20/x
  3. Step 3: Cross multiply
    1,081.44x = 1,612.68 × 1,072.20
  4. Step 4: Simplify right side
    1,081.44x = 1,729,115.50
  5. Step 5: Solve for x
    x = 1,729,115.50/1,081.44
  6. Step 6: Final answer
    x = 1,598.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.