Home / 3,881.25-5,822.48-1,415.61

Finding the Fourth Proportional to 3,881.25, 5,822.48 and 1,415.61

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Solution

The fourth proportional to 3,881.25, 5,822.48 and 1,415.61 is: 2,123.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.25 : 5,822.48 = 1,415.61 : x
  2. Step 2: Convert to fraction form
    3,881.25/5,822.48 = 1,415.61/x
  3. Step 3: Cross multiply
    3,881.25x = 5,822.48 × 1,415.61
  4. Step 4: Simplify right side
    3,881.25x = 8,242,364.45
  5. Step 5: Solve for x
    x = 8,242,364.45/3,881.25
  6. Step 6: Final answer
    x = 2,123.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.