Home / 9,191.09-13,781.76-3,994.13

Finding the Fourth Proportional to 9,191.09, 13,781.76 and 3,994.13

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Solution

The fourth proportional to 9,191.09, 13,781.76 and 3,994.13 is: 5,989.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,191.09 : 13,781.76 = 3,994.13 : x
  2. Step 2: Convert to fraction form
    9,191.09/13,781.76 = 3,994.13/x
  3. Step 3: Cross multiply
    9,191.09x = 13,781.76 × 3,994.13
  4. Step 4: Simplify right side
    9,191.09x = 55,046,072.16
  5. Step 5: Solve for x
    x = 55,046,072.16/9,191.09
  6. Step 6: Final answer
    x = 5,989.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.