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Finding the Fourth Proportional to 7,374.87, 11,064.74 and 2,991.15

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Solution

The fourth proportional to 7,374.87, 11,064.74 and 2,991.15 is: 4,487.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,374.87 : 11,064.74 = 2,991.15 : x
  2. Step 2: Convert to fraction form
    7,374.87/11,064.74 = 2,991.15/x
  3. Step 3: Cross multiply
    7,374.87x = 11,064.74 × 2,991.15
  4. Step 4: Simplify right side
    7,374.87x = 33,096,282.10
  5. Step 5: Solve for x
    x = 33,096,282.10/7,374.87
  6. Step 6: Final answer
    x = 4,487.71

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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.