Home / 7,815.74-11,719.83-2,887.70

Finding the Fourth Proportional to 7,815.74, 11,719.83 and 2,887.70

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Solution

The fourth proportional to 7,815.74, 11,719.83 and 2,887.70 is: 4,330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.74 : 11,719.83 = 2,887.70 : x
  2. Step 2: Convert to fraction form
    7,815.74/11,719.83 = 2,887.70/x
  3. Step 3: Cross multiply
    7,815.74x = 11,719.83 × 2,887.70
  4. Step 4: Simplify right side
    7,815.74x = 33,843,353.09
  5. Step 5: Solve for x
    x = 33,843,353.09/7,815.74
  6. Step 6: Final answer
    x = 4,330.15

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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.