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Finding the Fourth Proportional to 2,990.00, 4,126.07 and 1,663.83

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Solution

The fourth proportional to 2,990.00, 4,126.07 and 1,663.83 is: 2,296.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.00 : 4,126.07 = 1,663.83 : x
  2. Step 2: Convert to fraction form
    2,990.00/4,126.07 = 1,663.83/x
  3. Step 3: Cross multiply
    2,990.00x = 4,126.07 × 1,663.83
  4. Step 4: Simplify right side
    2,990.00x = 6,865,083.21
  5. Step 5: Solve for x
    x = 6,865,083.21/2,990.00
  6. Step 6: Final answer
    x = 2,296.01

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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.