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Finding the Fourth Proportional to 8,537.62, 12,809.74 and 2,991.58

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Solution

The fourth proportional to 8,537.62, 12,809.74 and 2,991.58 is: 4,488.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,537.62 : 12,809.74 = 2,991.58 : x
  2. Step 2: Convert to fraction form
    8,537.62/12,809.74 = 2,991.58/x
  3. Step 3: Cross multiply
    8,537.62x = 12,809.74 × 2,991.58
  4. Step 4: Simplify right side
    8,537.62x = 38,321,361.99
  5. Step 5: Solve for x
    x = 38,321,361.99/8,537.62
  6. Step 6: Final answer
    x = 4,488.53

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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.