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Finding the Fourth Proportional to 7,165.58, 10,738.63 and 5,409.15

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Solution

The fourth proportional to 7,165.58, 10,738.63 and 5,409.15 is: 8,106.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,165.58 : 10,738.63 = 5,409.15 : x
  2. Step 2: Convert to fraction form
    7,165.58/10,738.63 = 5,409.15/x
  3. Step 3: Cross multiply
    7,165.58x = 10,738.63 × 5,409.15
  4. Step 4: Simplify right side
    7,165.58x = 58,086,796.53
  5. Step 5: Solve for x
    x = 58,086,796.53/7,165.58
  6. Step 6: Final answer
    x = 8,106.36

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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.