Home / 7,911.78-11,865.84-5,462.34

Finding the Fourth Proportional to 7,911.78, 11,865.84 and 5,462.34

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Solution

The fourth proportional to 7,911.78, 11,865.84 and 5,462.34 is: 8,192.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.78 : 11,865.84 = 5,462.34 : x
  2. Step 2: Convert to fraction form
    7,911.78/11,865.84 = 5,462.34/x
  3. Step 3: Cross multiply
    7,911.78x = 11,865.84 × 5,462.34
  4. Step 4: Simplify right side
    7,911.78x = 64,815,252.47
  5. Step 5: Solve for x
    x = 64,815,252.47/7,911.78
  6. Step 6: Final answer
    x = 8,192.25

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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.