Home / 3,189.45-4,807.83-2,912.61

Finding the Fourth Proportional to 3,189.45, 4,807.83 and 2,912.61

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Solution

The fourth proportional to 3,189.45, 4,807.83 and 2,912.61 is: 4,390.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.45 : 4,807.83 = 2,912.61 : x
  2. Step 2: Convert to fraction form
    3,189.45/4,807.83 = 2,912.61/x
  3. Step 3: Cross multiply
    3,189.45x = 4,807.83 × 2,912.61
  4. Step 4: Simplify right side
    3,189.45x = 14,003,333.74
  5. Step 5: Solve for x
    x = 14,003,333.74/3,189.45
  6. Step 6: Final answer
    x = 4,390.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.