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Finding the Fourth Proportional to 2,646.91, 3,969.09 and 797.68

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Solution

The fourth proportional to 2,646.91, 3,969.09 and 797.68 is: 1,196.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,646.91 : 3,969.09 = 797.68 : x
  2. Step 2: Convert to fraction form
    2,646.91/3,969.09 = 797.68/x
  3. Step 3: Cross multiply
    2,646.91x = 3,969.09 × 797.68
  4. Step 4: Simplify right side
    2,646.91x = 3,166,063.71
  5. Step 5: Solve for x
    x = 3,166,063.71/2,646.91
  6. Step 6: Final answer
    x = 1,196.14

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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.