Home / 7,909.12-11,856.24-2,711.28

Finding the Fourth Proportional to 7,909.12, 11,856.24 and 2,711.28

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Solution

The fourth proportional to 7,909.12, 11,856.24 and 2,711.28 is: 4,064.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.12 : 11,856.24 = 2,711.28 : x
  2. Step 2: Convert to fraction form
    7,909.12/11,856.24 = 2,711.28/x
  3. Step 3: Cross multiply
    7,909.12x = 11,856.24 × 2,711.28
  4. Step 4: Simplify right side
    7,909.12x = 32,145,586.39
  5. Step 5: Solve for x
    x = 32,145,586.39/7,909.12
  6. Step 6: Final answer
    x = 4,064.37

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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.