Home / 2,990.62-4,486.23-1,143.29

Finding the Fourth Proportional to 2,990.62, 4,486.23 and 1,143.29

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Solution

The fourth proportional to 2,990.62, 4,486.23 and 1,143.29 is: 1,715.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.62 : 4,486.23 = 1,143.29 : x
  2. Step 2: Convert to fraction form
    2,990.62/4,486.23 = 1,143.29/x
  3. Step 3: Cross multiply
    2,990.62x = 4,486.23 × 1,143.29
  4. Step 4: Simplify right side
    2,990.62x = 5,129,053.54
  5. Step 5: Solve for x
    x = 5,129,053.54/2,990.62
  6. Step 6: Final answer
    x = 1,715.05

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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.