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Finding the Fourth Proportional to 2,789.49, 4,184.22 and 681.09

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Solution

The fourth proportional to 2,789.49, 4,184.22 and 681.09 is: 1,021.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.49 : 4,184.22 = 681.09 : x
  2. Step 2: Convert to fraction form
    2,789.49/4,184.22 = 681.09/x
  3. Step 3: Cross multiply
    2,789.49x = 4,184.22 × 681.09
  4. Step 4: Simplify right side
    2,789.49x = 2,849,830.40
  5. Step 5: Solve for x
    x = 2,849,830.40/2,789.49
  6. Step 6: Final answer
    x = 1,021.63

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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.