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Finding the Fourth Proportional to 7,518.76, 10,375.51 and 4,115.68

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Solution

The fourth proportional to 7,518.76, 10,375.51 and 4,115.68 is: 5,679.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,518.76 : 10,375.51 = 4,115.68 : x
  2. Step 2: Convert to fraction form
    7,518.76/10,375.51 = 4,115.68/x
  3. Step 3: Cross multiply
    7,518.76x = 10,375.51 × 4,115.68
  4. Step 4: Simplify right side
    7,518.76x = 42,702,206.54
  5. Step 5: Solve for x
    x = 42,702,206.54/7,518.76
  6. Step 6: Final answer
    x = 5,679.43

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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.