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Finding the Fourth Proportional to 7,959.34, 11,939.10 and 2,412.64

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Solution

The fourth proportional to 7,959.34, 11,939.10 and 2,412.64 is: 3,618.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.34 : 11,939.10 = 2,412.64 : x
  2. Step 2: Convert to fraction form
    7,959.34/11,939.10 = 2,412.64/x
  3. Step 3: Cross multiply
    7,959.34x = 11,939.10 × 2,412.64
  4. Step 4: Simplify right side
    7,959.34x = 28,804,750.22
  5. Step 5: Solve for x
    x = 28,804,750.22/7,959.34
  6. Step 6: Final answer
    x = 3,618.99

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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.