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Finding the Fourth Proportional to 7,866.12, 11,799.21 and 2,319.54

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Solution

The fourth proportional to 7,866.12, 11,799.21 and 2,319.54 is: 3,479.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,866.12 : 11,799.21 = 2,319.54 : x
  2. Step 2: Convert to fraction form
    7,866.12/11,799.21 = 2,319.54/x
  3. Step 3: Cross multiply
    7,866.12x = 11,799.21 × 2,319.54
  4. Step 4: Simplify right side
    7,866.12x = 27,368,739.56
  5. Step 5: Solve for x
    x = 27,368,739.56/7,866.12
  6. Step 6: Final answer
    x = 3,479.32

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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.