Home / 6,890.91-9,509.60-3,747.09

Finding the Fourth Proportional to 6,890.91, 9,509.60 and 3,747.09

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Solution

The fourth proportional to 6,890.91, 9,509.60 and 3,747.09 is: 5,171.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890.91 : 9,509.60 = 3,747.09 : x
  2. Step 2: Convert to fraction form
    6,890.91/9,509.60 = 3,747.09/x
  3. Step 3: Cross multiply
    6,890.91x = 9,509.60 × 3,747.09
  4. Step 4: Simplify right side
    6,890.91x = 35,633,372.09
  5. Step 5: Solve for x
    x = 35,633,372.09/6,890.91
  6. Step 6: Final answer
    x = 5,171.07

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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.