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Finding the Fourth Proportional to 3,285.91, 4,929.81 and 1,900.24

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Solution

The fourth proportional to 3,285.91, 4,929.81 and 1,900.24 is: 2,850.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.91 : 4,929.81 = 1,900.24 : x
  2. Step 2: Convert to fraction form
    3,285.91/4,929.81 = 1,900.24/x
  3. Step 3: Cross multiply
    3,285.91x = 4,929.81 × 1,900.24
  4. Step 4: Simplify right side
    3,285.91x = 9,367,822.15
  5. Step 5: Solve for x
    x = 9,367,822.15/3,285.91
  6. Step 6: Final answer
    x = 2,850.91

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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.