Home / 3,953.90-5,456.36-2,185.50

Finding the Fourth Proportional to 3,953.90, 5,456.36 and 2,185.50

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Solution

The fourth proportional to 3,953.90, 5,456.36 and 2,185.50 is: 3,015.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.90 : 5,456.36 = 2,185.50 : x
  2. Step 2: Convert to fraction form
    3,953.90/5,456.36 = 2,185.50/x
  3. Step 3: Cross multiply
    3,953.90x = 5,456.36 × 2,185.50
  4. Step 4: Simplify right side
    3,953.90x = 11,924,863.85
  5. Step 5: Solve for x
    x = 11,924,863.85/3,953.90
  6. Step 6: Final answer
    x = 3,015.98

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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.