Home / 1,481.47-2,222.18-385.75

Finding the Fourth Proportional to 1,481.47, 2,222.18 and 385.75

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Solution

The fourth proportional to 1,481.47, 2,222.18 and 385.75 is: 578.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.47 : 2,222.18 = 385.75 : x
  2. Step 2: Convert to fraction form
    1,481.47/2,222.18 = 385.75/x
  3. Step 3: Cross multiply
    1,481.47x = 2,222.18 × 385.75
  4. Step 4: Simplify right side
    1,481.47x = 857,205.94
  5. Step 5: Solve for x
    x = 857,205.94/1,481.47
  6. Step 6: Final answer
    x = 578.62

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Double scale
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1.5x scale

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.