Home / 6,890.48-9,508.62-3,906.24

Finding the Fourth Proportional to 6,890.48, 9,508.62 and 3,906.24

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Solution

The fourth proportional to 6,890.48, 9,508.62 and 3,906.24 is: 5,390.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890.48 : 9,508.62 = 3,906.24 : x
  2. Step 2: Convert to fraction form
    6,890.48/9,508.62 = 3,906.24/x
  3. Step 3: Cross multiply
    6,890.48x = 9,508.62 × 3,906.24
  4. Step 4: Simplify right side
    6,890.48x = 37,142,951.79
  5. Step 5: Solve for x
    x = 37,142,951.79/6,890.48
  6. Step 6: Final answer
    x = 5,390.47

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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.