Home / 3,886.05-5,827.36-1,112.09

Finding the Fourth Proportional to 3,886.05, 5,827.36 and 1,112.09

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Solution

The fourth proportional to 3,886.05, 5,827.36 and 1,112.09 is: 1,667.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.05 : 5,827.36 = 1,112.09 : x
  2. Step 2: Convert to fraction form
    3,886.05/5,827.36 = 1,112.09/x
  3. Step 3: Cross multiply
    3,886.05x = 5,827.36 × 1,112.09
  4. Step 4: Simplify right side
    3,886.05x = 6,480,538.72
  5. Step 5: Solve for x
    x = 6,480,538.72/3,886.05
  6. Step 6: Final answer
    x = 1,667.64

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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.