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Finding the Fourth Proportional to 7,924.88, 11,879.07 and 2,655.92

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Solution

The fourth proportional to 7,924.88, 11,879.07 and 2,655.92 is: 3,981.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,924.88 : 11,879.07 = 2,655.92 : x
  2. Step 2: Convert to fraction form
    7,924.88/11,879.07 = 2,655.92/x
  3. Step 3: Cross multiply
    7,924.88x = 11,879.07 × 2,655.92
  4. Step 4: Simplify right side
    7,924.88x = 31,549,859.59
  5. Step 5: Solve for x
    x = 31,549,859.59/7,924.88
  6. Step 6: Final answer
    x = 3,981.12

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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.