Home / 7,815.72-11,722.32-3,432.36

Finding the Fourth Proportional to 7,815.72, 11,722.32 and 3,432.36

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Solution

The fourth proportional to 7,815.72, 11,722.32 and 3,432.36 is: 5,147.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.72 : 11,722.32 = 3,432.36 : x
  2. Step 2: Convert to fraction form
    7,815.72/11,722.32 = 3,432.36/x
  3. Step 3: Cross multiply
    7,815.72x = 11,722.32 × 3,432.36
  4. Step 4: Simplify right side
    7,815.72x = 40,235,222.28
  5. Step 5: Solve for x
    x = 40,235,222.28/7,815.72
  6. Step 6: Final answer
    x = 5,147.99

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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.