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Finding the Fourth Proportional to 3,589.40, 4,953.40 and 2,172.62

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Solution

The fourth proportional to 3,589.40, 4,953.40 and 2,172.62 is: 2,998.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,589.40 : 4,953.40 = 2,172.62 : x
  2. Step 2: Convert to fraction form
    3,589.40/4,953.40 = 2,172.62/x
  3. Step 3: Cross multiply
    3,589.40x = 4,953.40 × 2,172.62
  4. Step 4: Simplify right side
    3,589.40x = 10,761,855.91
  5. Step 5: Solve for x
    x = 10,761,855.91/3,589.40
  6. Step 6: Final answer
    x = 2,998.23

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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.