Home / 6,639.64-9,959.46-2,739.76

Finding the Fourth Proportional to 6,639.64, 9,959.46 and 2,739.76

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Solution

The fourth proportional to 6,639.64, 9,959.46 and 2,739.76 is: 4,109.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.64 : 9,959.46 = 2,739.76 : x
  2. Step 2: Convert to fraction form
    6,639.64/9,959.46 = 2,739.76/x
  3. Step 3: Cross multiply
    6,639.64x = 9,959.46 × 2,739.76
  4. Step 4: Simplify right side
    6,639.64x = 27,286,530.13
  5. Step 5: Solve for x
    x = 27,286,530.13/6,639.64
  6. Step 6: Final answer
    x = 4,109.64

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1.5x scale

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.