Home / 6,617.40-9,921.30-2,719.80

Finding the Fourth Proportional to 6,617.40, 9,921.30 and 2,719.80

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Solution

The fourth proportional to 6,617.40, 9,921.30 and 2,719.80 is: 4,077.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,617.40 : 9,921.30 = 2,719.80 : x
  2. Step 2: Convert to fraction form
    6,617.40/9,921.30 = 2,719.80/x
  3. Step 3: Cross multiply
    6,617.40x = 9,921.30 × 2,719.80
  4. Step 4: Simplify right side
    6,617.40x = 26,983,951.74
  5. Step 5: Solve for x
    x = 26,983,951.74/6,617.40
  6. Step 6: Final answer
    x = 4,077.73

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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.