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Finding the Fourth Proportional to 3,609.09, 4,981.10 and 2,618.87

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Solution

The fourth proportional to 3,609.09, 4,981.10 and 2,618.87 is: 3,614.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.09 : 4,981.10 = 2,618.87 : x
  2. Step 2: Convert to fraction form
    3,609.09/4,981.10 = 2,618.87/x
  3. Step 3: Cross multiply
    3,609.09x = 4,981.10 × 2,618.87
  4. Step 4: Simplify right side
    3,609.09x = 13,044,815.36
  5. Step 5: Solve for x
    x = 13,044,815.36/3,609.09
  6. Step 6: Final answer
    x = 3,614.43

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1.5x scale

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.