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Finding the Fourth Proportional to 5,339.52, 7,998.80 and 3,112.80

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Solution

The fourth proportional to 5,339.52, 7,998.80 and 3,112.80 is: 4,663.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,339.52 : 7,998.80 = 3,112.80 : x
  2. Step 2: Convert to fraction form
    5,339.52/7,998.80 = 3,112.80/x
  3. Step 3: Cross multiply
    5,339.52x = 7,998.80 × 3,112.80
  4. Step 4: Simplify right side
    5,339.52x = 24,898,664.64
  5. Step 5: Solve for x
    x = 24,898,664.64/5,339.52
  6. Step 6: Final answer
    x = 4,663.09

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1.5x scale

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.