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Finding the Fourth Proportional to 5,489.60, 8,233.60 and 2,715.56

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Solution

The fourth proportional to 5,489.60, 8,233.60 and 2,715.56 is: 4,072.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.60 : 8,233.60 = 2,715.56 : x
  2. Step 2: Convert to fraction form
    5,489.60/8,233.60 = 2,715.56/x
  3. Step 3: Cross multiply
    5,489.60x = 8,233.60 × 2,715.56
  4. Step 4: Simplify right side
    5,489.60x = 22,358,834.82
  5. Step 5: Solve for x
    x = 22,358,834.82/5,489.60
  6. Step 6: Final answer
    x = 4,072.94

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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.