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Finding the Fourth Proportional to 7,491.57, 11,236.74 and 1,944.90

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Solution

The fourth proportional to 7,491.57, 11,236.74 and 1,944.90 is: 2,917.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,491.57 : 11,236.74 = 1,944.90 : x
  2. Step 2: Convert to fraction form
    7,491.57/11,236.74 = 1,944.90/x
  3. Step 3: Cross multiply
    7,491.57x = 11,236.74 × 1,944.90
  4. Step 4: Simplify right side
    7,491.57x = 21,854,335.63
  5. Step 5: Solve for x
    x = 21,854,335.63/7,491.57
  6. Step 6: Final answer
    x = 2,917.19

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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.