Home / 1,990.58-2,984.85-1,169.10

Finding the Fourth Proportional to 1,990.58, 2,984.85 and 1,169.10

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Solution

The fourth proportional to 1,990.58, 2,984.85 and 1,169.10 is: 1,753.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.58 : 2,984.85 = 1,169.10 : x
  2. Step 2: Convert to fraction form
    1,990.58/2,984.85 = 1,169.10/x
  3. Step 3: Cross multiply
    1,990.58x = 2,984.85 × 1,169.10
  4. Step 4: Simplify right side
    1,990.58x = 3,489,588.14
  5. Step 5: Solve for x
    x = 3,489,588.14/1,990.58
  6. Step 6: Final answer
    x = 1,753.06

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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.