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Finding the Fourth Proportional to 1,661.00, 2,491.49 and 1,296.09

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Solution

The fourth proportional to 1,661.00, 2,491.49 and 1,296.09 is: 1,944.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.00 : 2,491.49 = 1,296.09 : x
  2. Step 2: Convert to fraction form
    1,661.00/2,491.49 = 1,296.09/x
  3. Step 3: Cross multiply
    1,661.00x = 2,491.49 × 1,296.09
  4. Step 4: Simplify right side
    1,661.00x = 3,229,188.79
  5. Step 5: Solve for x
    x = 3,229,188.79/1,661.00
  6. Step 6: Final answer
    x = 1,944.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.