Home / 7,081.08-9,771.68-3,894.37

Finding the Fourth Proportional to 7,081.08, 9,771.68 and 3,894.37

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Solution

The fourth proportional to 7,081.08, 9,771.68 and 3,894.37 is: 5,374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.08 : 9,771.68 = 3,894.37 : x
  2. Step 2: Convert to fraction form
    7,081.08/9,771.68 = 3,894.37/x
  3. Step 3: Cross multiply
    7,081.08x = 9,771.68 × 3,894.37
  4. Step 4: Simplify right side
    7,081.08x = 38,054,493.54
  5. Step 5: Solve for x
    x = 38,054,493.54/7,081.08
  6. Step 6: Final answer
    x = 5,374.11

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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.