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Finding the Fourth Proportional to 7,618.77, 11,422.79 and 2,934.86

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Solution

The fourth proportional to 7,618.77, 11,422.79 and 2,934.86 is: 4,400.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,618.77 : 11,422.79 = 2,934.86 : x
  2. Step 2: Convert to fraction form
    7,618.77/11,422.79 = 2,934.86/x
  3. Step 3: Cross multiply
    7,618.77x = 11,422.79 × 2,934.86
  4. Step 4: Simplify right side
    7,618.77x = 33,524,289.46
  5. Step 5: Solve for x
    x = 33,524,289.46/7,618.77
  6. Step 6: Final answer
    x = 4,400.22

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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.