Home / 3,881.30-5,355.93-2,309.09

Finding the Fourth Proportional to 3,881.30, 5,355.93 and 2,309.09

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Solution

The fourth proportional to 3,881.30, 5,355.93 and 2,309.09 is: 3,186.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.30 : 5,355.93 = 2,309.09 : x
  2. Step 2: Convert to fraction form
    3,881.30/5,355.93 = 2,309.09/x
  3. Step 3: Cross multiply
    3,881.30x = 5,355.93 × 2,309.09
  4. Step 4: Simplify right side
    3,881.30x = 12,367,297.62
  5. Step 5: Solve for x
    x = 12,367,297.62/3,881.30
  6. Step 6: Final answer
    x = 3,186.38

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1.5x scale

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.