Home / 7,959.78-11,939.68-2,762

Finding the Fourth Proportional to 7,959.78, 11,939.68 and 2,762

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Solution

The fourth proportional to 7,959.78, 11,939.68 and 2,762 is: 4,143.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.78 : 11,939.68 = 2,762 : x
  2. Step 2: Convert to fraction form
    7,959.78/11,939.68 = 2,762/x
  3. Step 3: Cross multiply
    7,959.78x = 11,939.68 × 2,762
  4. Step 4: Simplify right side
    7,959.78x = 32,977,396.16
  5. Step 5: Solve for x
    x = 32,977,396.16/7,959.78
  6. Step 6: Final answer
    x = 4,143.00

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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.