Home / 6,115.28-8,439.04-3,320.80

Finding the Fourth Proportional to 6,115.28, 8,439.04 and 3,320.80

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Solution

The fourth proportional to 6,115.28, 8,439.04 and 3,320.80 is: 4,582.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,115.28 : 8,439.04 = 3,320.80 : x
  2. Step 2: Convert to fraction form
    6,115.28/8,439.04 = 3,320.80/x
  3. Step 3: Cross multiply
    6,115.28x = 8,439.04 × 3,320.80
  4. Step 4: Simplify right side
    6,115.28x = 28,024,364.03
  5. Step 5: Solve for x
    x = 28,024,364.03/6,115.28
  6. Step 6: Final answer
    x = 4,582.68

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