Home / 3,620.52-4,990.68-3,319.20

Finding the Fourth Proportional to 3,620.52, 4,990.68 and 3,319.20

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Solution

The fourth proportional to 3,620.52, 4,990.68 and 3,319.20 is: 4,575.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.52 : 4,990.68 = 3,319.20 : x
  2. Step 2: Convert to fraction form
    3,620.52/4,990.68 = 3,319.20/x
  3. Step 3: Cross multiply
    3,620.52x = 4,990.68 × 3,319.20
  4. Step 4: Simplify right side
    3,620.52x = 16,565,065.06
  5. Step 5: Solve for x
    x = 16,565,065.06/3,620.52
  6. Step 6: Final answer
    x = 4,575.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.