Home / 1,990.32-2,976.64-1,772.56

Finding the Fourth Proportional to 1,990.32, 2,976.64 and 1,772.56

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Solution

The fourth proportional to 1,990.32, 2,976.64 and 1,772.56 is: 2,650.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.32 : 2,976.64 = 1,772.56 : x
  2. Step 2: Convert to fraction form
    1,990.32/2,976.64 = 1,772.56/x
  3. Step 3: Cross multiply
    1,990.32x = 2,976.64 × 1,772.56
  4. Step 4: Simplify right side
    1,990.32x = 5,276,273.00
  5. Step 5: Solve for x
    x = 5,276,273.00/1,990.32
  6. Step 6: Final answer
    x = 2,650.97

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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.