Home / 7,815.34-11,719.96-2,816.36

Finding the Fourth Proportional to 7,815.34, 11,719.96 and 2,816.36

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Solution

The fourth proportional to 7,815.34, 11,719.96 and 2,816.36 is: 4,223.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.34 : 11,719.96 = 2,816.36 : x
  2. Step 2: Convert to fraction form
    7,815.34/11,719.96 = 2,816.36/x
  3. Step 3: Cross multiply
    7,815.34x = 11,719.96 × 2,816.36
  4. Step 4: Simplify right side
    7,815.34x = 33,007,626.55
  5. Step 5: Solve for x
    x = 33,007,626.55/7,815.34
  6. Step 6: Final answer
    x = 4,223.44

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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.