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Finding the Fourth Proportional to 7,900.32, 11,850.12 and 2,969.58

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Solution

The fourth proportional to 7,900.32, 11,850.12 and 2,969.58 is: 4,454.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.32 : 11,850.12 = 2,969.58 : x
  2. Step 2: Convert to fraction form
    7,900.32/11,850.12 = 2,969.58/x
  3. Step 3: Cross multiply
    7,900.32x = 11,850.12 × 2,969.58
  4. Step 4: Simplify right side
    7,900.32x = 35,189,879.35
  5. Step 5: Solve for x
    x = 35,189,879.35/7,900.32
  6. Step 6: Final answer
    x = 4,454.23

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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.