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Finding the Fourth Proportional to 2,658.69, 3,983.43 and 2,427.21

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Solution

The fourth proportional to 2,658.69, 3,983.43 and 2,427.21 is: 3,636.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.69 : 3,983.43 = 2,427.21 : x
  2. Step 2: Convert to fraction form
    2,658.69/3,983.43 = 2,427.21/x
  3. Step 3: Cross multiply
    2,658.69x = 3,983.43 × 2,427.21
  4. Step 4: Simplify right side
    2,658.69x = 9,668,621.13
  5. Step 5: Solve for x
    x = 9,668,621.13/2,658.69
  6. Step 6: Final answer
    x = 3,636.61

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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.