Home / 2,990.74-4,127.01-1,664.38

Finding the Fourth Proportional to 2,990.74, 4,127.01 and 1,664.38

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Solution

The fourth proportional to 2,990.74, 4,127.01 and 1,664.38 is: 2,296.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.74 : 4,127.01 = 1,664.38 : x
  2. Step 2: Convert to fraction form
    2,990.74/4,127.01 = 1,664.38/x
  3. Step 3: Cross multiply
    2,990.74x = 4,127.01 × 1,664.38
  4. Step 4: Simplify right side
    2,990.74x = 6,868,912.90
  5. Step 5: Solve for x
    x = 6,868,912.90/2,990.74
  6. Step 6: Final answer
    x = 2,296.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.