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Finding the Fourth Proportional to 7,911.04, 11,863.86 and 3,230.32

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Solution

The fourth proportional to 7,911.04, 11,863.86 and 3,230.32 is: 4,844.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.04 : 11,863.86 = 3,230.32 : x
  2. Step 2: Convert to fraction form
    7,911.04/11,863.86 = 3,230.32/x
  3. Step 3: Cross multiply
    7,911.04x = 11,863.86 × 3,230.32
  4. Step 4: Simplify right side
    7,911.04x = 38,324,064.24
  5. Step 5: Solve for x
    x = 38,324,064.24/7,911.04
  6. Step 6: Final answer
    x = 4,844.38

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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.