Home / 7,115.14-9,818.92-3,971.33

Finding the Fourth Proportional to 7,115.14, 9,818.92 and 3,971.33

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Solution

The fourth proportional to 7,115.14, 9,818.92 and 3,971.33 is: 5,480.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.14 : 9,818.92 = 3,971.33 : x
  2. Step 2: Convert to fraction form
    7,115.14/9,818.92 = 3,971.33/x
  3. Step 3: Cross multiply
    7,115.14x = 9,818.92 × 3,971.33
  4. Step 4: Simplify right side
    7,115.14x = 38,994,164.25
  5. Step 5: Solve for x
    x = 38,994,164.25/7,115.14
  6. Step 6: Final answer
    x = 5,480.45

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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.