Home / 3,285-4,929.66-1,553.76

Finding the Fourth Proportional to 3,285, 4,929.66 and 1,553.76

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Solution

The fourth proportional to 3,285, 4,929.66 and 1,553.76 is: 2,331.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285 : 4,929.66 = 1,553.76 : x
  2. Step 2: Convert to fraction form
    3,285/4,929.66 = 1,553.76/x
  3. Step 3: Cross multiply
    3,285x = 4,929.66 × 1,553.76
  4. Step 4: Simplify right side
    3,285x = 7,659,508.52
  5. Step 5: Solve for x
    x = 7,659,508.52/3,285
  6. Step 6: Final answer
    x = 2,331.66

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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.