Home / 6,731.36-9,288.44-3,898.70

Finding the Fourth Proportional to 6,731.36, 9,288.44 and 3,898.70

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Solution

The fourth proportional to 6,731.36, 9,288.44 and 3,898.70 is: 5,379.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,731.36 : 9,288.44 = 3,898.70 : x
  2. Step 2: Convert to fraction form
    6,731.36/9,288.44 = 3,898.70/x
  3. Step 3: Cross multiply
    6,731.36x = 9,288.44 × 3,898.70
  4. Step 4: Simplify right side
    6,731.36x = 36,212,775.09
  5. Step 5: Solve for x
    x = 36,212,775.09/6,731.36
  6. Step 6: Final answer
    x = 5,379.72

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1.5x scale

Why These Related Problems?

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