Home / 2,990.22-4,126.44-1,663.91

Finding the Fourth Proportional to 2,990.22, 4,126.44 and 1,663.91

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Solution

The fourth proportional to 2,990.22, 4,126.44 and 1,663.91 is: 2,296.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.22 : 4,126.44 = 1,663.91 : x
  2. Step 2: Convert to fraction form
    2,990.22/4,126.44 = 1,663.91/x
  3. Step 3: Cross multiply
    2,990.22x = 4,126.44 × 1,663.91
  4. Step 4: Simplify right side
    2,990.22x = 6,866,025.86
  5. Step 5: Solve for x
    x = 6,866,025.86/2,990.22
  6. Step 6: Final answer
    x = 2,296.16

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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.