Home / 3,908.72-5,390.16-3,162.08

Finding the Fourth Proportional to 3,908.72, 5,390.16 and 3,162.08

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Solution

The fourth proportional to 3,908.72, 5,390.16 and 3,162.08 is: 4,360.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.72 : 5,390.16 = 3,162.08 : x
  2. Step 2: Convert to fraction form
    3,908.72/5,390.16 = 3,162.08/x
  3. Step 3: Cross multiply
    3,908.72x = 5,390.16 × 3,162.08
  4. Step 4: Simplify right side
    3,908.72x = 17,044,117.13
  5. Step 5: Solve for x
    x = 17,044,117.13/3,908.72
  6. Step 6: Final answer
    x = 4,360.54

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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.