Home / 7,913.89-11,867.46-2,980.09

Finding the Fourth Proportional to 7,913.89, 11,867.46 and 2,980.09

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Solution

The fourth proportional to 7,913.89, 11,867.46 and 2,980.09 is: 4,468.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.89 : 11,867.46 = 2,980.09 : x
  2. Step 2: Convert to fraction form
    7,913.89/11,867.46 = 2,980.09/x
  3. Step 3: Cross multiply
    7,913.89x = 11,867.46 × 2,980.09
  4. Step 4: Simplify right side
    7,913.89x = 35,366,098.87
  5. Step 5: Solve for x
    x = 35,366,098.87/7,913.89
  6. Step 6: Final answer
    x = 4,468.86

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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.