Home / 6,781.75-10,172.81-2,164.75

Finding the Fourth Proportional to 6,781.75, 10,172.81 and 2,164.75

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Solution

The fourth proportional to 6,781.75, 10,172.81 and 2,164.75 is: 3,247.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.75 : 10,172.81 = 2,164.75 : x
  2. Step 2: Convert to fraction form
    6,781.75/10,172.81 = 2,164.75/x
  3. Step 3: Cross multiply
    6,781.75x = 10,172.81 × 2,164.75
  4. Step 4: Simplify right side
    6,781.75x = 22,021,590.45
  5. Step 5: Solve for x
    x = 22,021,590.45/6,781.75
  6. Step 6: Final answer
    x = 3,247.18

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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.