Home / 2,990.91-4,126.95-1,664.58

Finding the Fourth Proportional to 2,990.91, 4,126.95 and 1,664.58

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Solution

The fourth proportional to 2,990.91, 4,126.95 and 1,664.58 is: 2,296.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.91 : 4,126.95 = 1,664.58 : x
  2. Step 2: Convert to fraction form
    2,990.91/4,126.95 = 1,664.58/x
  3. Step 3: Cross multiply
    2,990.91x = 4,126.95 × 1,664.58
  4. Step 4: Simplify right side
    2,990.91x = 6,869,638.43
  5. Step 5: Solve for x
    x = 6,869,638.43/2,990.91
  6. Step 6: Final answer
    x = 2,296.84

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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.