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Finding the Fourth Proportional to 5,432.80, 8,152.80 and 3,092.80

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Solution

The fourth proportional to 5,432.80, 8,152.80 and 3,092.80 is: 4,641.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,432.80 : 8,152.80 = 3,092.80 : x
  2. Step 2: Convert to fraction form
    5,432.80/8,152.80 = 3,092.80/x
  3. Step 3: Cross multiply
    5,432.80x = 8,152.80 × 3,092.80
  4. Step 4: Simplify right side
    5,432.80x = 25,214,979.84
  5. Step 5: Solve for x
    x = 25,214,979.84/5,432.80
  6. Step 6: Final answer
    x = 4,641.25

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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.