Home / 1,481.10-2,221.58-385.46

Finding the Fourth Proportional to 1,481.10, 2,221.58 and 385.46

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Solution

The fourth proportional to 1,481.10, 2,221.58 and 385.46 is: 578.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.10 : 2,221.58 = 385.46 : x
  2. Step 2: Convert to fraction form
    1,481.10/2,221.58 = 385.46/x
  3. Step 3: Cross multiply
    1,481.10x = 2,221.58 × 385.46
  4. Step 4: Simplify right side
    1,481.10x = 856,330.23
  5. Step 5: Solve for x
    x = 856,330.23/1,481.10
  6. Step 6: Final answer
    x = 578.17

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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.