Home / 6,921.16-10,381.78-1,727.04

Finding the Fourth Proportional to 6,921.16, 10,381.78 and 1,727.04

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Solution

The fourth proportional to 6,921.16, 10,381.78 and 1,727.04 is: 2,590.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.16 : 10,381.78 = 1,727.04 : x
  2. Step 2: Convert to fraction form
    6,921.16/10,381.78 = 1,727.04/x
  3. Step 3: Cross multiply
    6,921.16x = 10,381.78 × 1,727.04
  4. Step 4: Simplify right side
    6,921.16x = 17,929,749.33
  5. Step 5: Solve for x
    x = 17,929,749.33/6,921.16
  6. Step 6: Final answer
    x = 2,590.57

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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.