Home / 2,990.62-4,127.14-1,664.44

Finding the Fourth Proportional to 2,990.62, 4,127.14 and 1,664.44

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Solution

The fourth proportional to 2,990.62, 4,127.14 and 1,664.44 is: 2,296.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.62 : 4,127.14 = 1,664.44 : x
  2. Step 2: Convert to fraction form
    2,990.62/4,127.14 = 1,664.44/x
  3. Step 3: Cross multiply
    2,990.62x = 4,127.14 × 1,664.44
  4. Step 4: Simplify right side
    2,990.62x = 6,869,376.90
  5. Step 5: Solve for x
    x = 6,869,376.90/2,990.62
  6. Step 6: Final answer
    x = 2,296.97

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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.