Home / 2,388.45-3,581.46-1,089.21

Finding the Fourth Proportional to 2,388.45, 3,581.46 and 1,089.21

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Solution

The fourth proportional to 2,388.45, 3,581.46 and 1,089.21 is: 1,633.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,388.45 : 3,581.46 = 1,089.21 : x
  2. Step 2: Convert to fraction form
    2,388.45/3,581.46 = 1,089.21/x
  3. Step 3: Cross multiply
    2,388.45x = 3,581.46 × 1,089.21
  4. Step 4: Simplify right side
    2,388.45x = 3,900,962.05
  5. Step 5: Solve for x
    x = 3,900,962.05/2,388.45
  6. Step 6: Final answer
    x = 1,633.26

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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.