Home / 6,890.84-9,508.68-3,906.08

Finding the Fourth Proportional to 6,890.84, 9,508.68 and 3,906.08

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Solution

The fourth proportional to 6,890.84, 9,508.68 and 3,906.08 is: 5,390.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890.84 : 9,508.68 = 3,906.08 : x
  2. Step 2: Convert to fraction form
    6,890.84/9,508.68 = 3,906.08/x
  3. Step 3: Cross multiply
    6,890.84x = 9,508.68 × 3,906.08
  4. Step 4: Simplify right side
    6,890.84x = 37,141,664.77
  5. Step 5: Solve for x
    x = 37,141,664.77/6,890.84
  6. Step 6: Final answer
    x = 5,390.01

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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.