Home / 3,898.26-5,379.62-2,130.03

Finding the Fourth Proportional to 3,898.26, 5,379.62 and 2,130.03

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Solution

The fourth proportional to 3,898.26, 5,379.62 and 2,130.03 is: 2,939.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.26 : 5,379.62 = 2,130.03 : x
  2. Step 2: Convert to fraction form
    3,898.26/5,379.62 = 2,130.03/x
  3. Step 3: Cross multiply
    3,898.26x = 5,379.62 × 2,130.03
  4. Step 4: Simplify right side
    3,898.26x = 11,458,741.34
  5. Step 5: Solve for x
    x = 11,458,741.34/3,898.26
  6. Step 6: Final answer
    x = 2,939.45

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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.