Home / 6,621.92-9,935.04-3,159.20

Finding the Fourth Proportional to 6,621.92, 9,935.04 and 3,159.20

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Solution

The fourth proportional to 6,621.92, 9,935.04 and 3,159.20 is: 4,739.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.92 : 9,935.04 = 3,159.20 : x
  2. Step 2: Convert to fraction form
    6,621.92/9,935.04 = 3,159.20/x
  3. Step 3: Cross multiply
    6,621.92x = 9,935.04 × 3,159.20
  4. Step 4: Simplify right side
    6,621.92x = 31,386,778.37
  5. Step 5: Solve for x
    x = 31,386,778.37/6,621.92
  6. Step 6: Final answer
    x = 4,739.83

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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.