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Finding the Fourth Proportional to 7,536.75, 10,400.95 and 4,179.87

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Solution

The fourth proportional to 7,536.75, 10,400.95 and 4,179.87 is: 5,768.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,536.75 : 10,400.95 = 4,179.87 : x
  2. Step 2: Convert to fraction form
    7,536.75/10,400.95 = 4,179.87/x
  3. Step 3: Cross multiply
    7,536.75x = 10,400.95 × 4,179.87
  4. Step 4: Simplify right side
    7,536.75x = 43,474,618.88
  5. Step 5: Solve for x
    x = 43,474,618.88/7,536.75
  6. Step 6: Final answer
    x = 5,768.35

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.