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Finding the Fourth Proportional to 7,581.70, 11,375.81 and 2,903.12

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Solution

The fourth proportional to 7,581.70, 11,375.81 and 2,903.12 is: 4,355.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,581.70 : 11,375.81 = 2,903.12 : x
  2. Step 2: Convert to fraction form
    7,581.70/11,375.81 = 2,903.12/x
  3. Step 3: Cross multiply
    7,581.70x = 11,375.81 × 2,903.12
  4. Step 4: Simplify right side
    7,581.70x = 33,025,341.53
  5. Step 5: Solve for x
    x = 33,025,341.53/7,581.70
  6. Step 6: Final answer
    x = 4,355.93

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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.