Home / 7,909.89-11,855.31-2,908.27

Finding the Fourth Proportional to 7,909.89, 11,855.31 and 2,908.27

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Solution

The fourth proportional to 7,909.89, 11,855.31 and 2,908.27 is: 4,358.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.89 : 11,855.31 = 2,908.27 : x
  2. Step 2: Convert to fraction form
    7,909.89/11,855.31 = 2,908.27/x
  3. Step 3: Cross multiply
    7,909.89x = 11,855.31 × 2,908.27
  4. Step 4: Simplify right side
    7,909.89x = 34,478,442.41
  5. Step 5: Solve for x
    x = 34,478,442.41/7,909.89
  6. Step 6: Final answer
    x = 4,358.90

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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.