Home / 3,976.35-5,487.80-2,405.31

Finding the Fourth Proportional to 3,976.35, 5,487.80 and 2,405.31

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Solution

The fourth proportional to 3,976.35, 5,487.80 and 2,405.31 is: 3,319.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.35 : 5,487.80 = 2,405.31 : x
  2. Step 2: Convert to fraction form
    3,976.35/5,487.80 = 2,405.31/x
  3. Step 3: Cross multiply
    3,976.35x = 5,487.80 × 2,405.31
  4. Step 4: Simplify right side
    3,976.35x = 13,199,848.19
  5. Step 5: Solve for x
    x = 13,199,848.19/3,976.35
  6. Step 6: Final answer
    x = 3,319.59

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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.