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Finding the Fourth Proportional to 7,188.77, 10,775.85 and 5,453.75

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Solution

The fourth proportional to 7,188.77, 10,775.85 and 5,453.75 is: 8,175.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.77 : 10,775.85 = 5,453.75 : x
  2. Step 2: Convert to fraction form
    7,188.77/10,775.85 = 5,453.75/x
  3. Step 3: Cross multiply
    7,188.77x = 10,775.85 × 5,453.75
  4. Step 4: Simplify right side
    7,188.77x = 58,768,791.94
  5. Step 5: Solve for x
    x = 58,768,791.94/7,188.77
  6. Step 6: Final answer
    x = 8,175.08

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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.