Home / 5,620.80-8,432.32-2,845.28

Finding the Fourth Proportional to 5,620.80, 8,432.32 and 2,845.28

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Solution

The fourth proportional to 5,620.80, 8,432.32 and 2,845.28 is: 4,268.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.80 : 8,432.32 = 2,845.28 : x
  2. Step 2: Convert to fraction form
    5,620.80/8,432.32 = 2,845.28/x
  3. Step 3: Cross multiply
    5,620.80x = 8,432.32 × 2,845.28
  4. Step 4: Simplify right side
    5,620.80x = 23,992,311.45
  5. Step 5: Solve for x
    x = 23,992,311.45/5,620.80
  6. Step 6: Final answer
    x = 4,268.49

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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.