Home / 6,485.20-9,719.68-2,783.14

Finding the Fourth Proportional to 6,485.20, 9,719.68 and 2,783.14

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Solution

The fourth proportional to 6,485.20, 9,719.68 and 2,783.14 is: 4,171.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.20 : 9,719.68 = 2,783.14 : x
  2. Step 2: Convert to fraction form
    6,485.20/9,719.68 = 2,783.14/x
  3. Step 3: Cross multiply
    6,485.20x = 9,719.68 × 2,783.14
  4. Step 4: Simplify right side
    6,485.20x = 27,051,230.20
  5. Step 5: Solve for x
    x = 27,051,230.20/6,485.20
  6. Step 6: Final answer
    x = 4,171.23

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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.