Home / 1,990.42-2,747.14-1,151.02

Finding the Fourth Proportional to 1,990.42, 2,747.14 and 1,151.02

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Solution

The fourth proportional to 1,990.42, 2,747.14 and 1,151.02 is: 1,588.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.42 : 2,747.14 = 1,151.02 : x
  2. Step 2: Convert to fraction form
    1,990.42/2,747.14 = 1,151.02/x
  3. Step 3: Cross multiply
    1,990.42x = 2,747.14 × 1,151.02
  4. Step 4: Simplify right side
    1,990.42x = 3,162,013.08
  5. Step 5: Solve for x
    x = 3,162,013.08/1,990.42
  6. Step 6: Final answer
    x = 1,588.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.