Home / 3,886.25-5,830.28-1,112.96

Finding the Fourth Proportional to 3,886.25, 5,830.28 and 1,112.96

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Solution

The fourth proportional to 3,886.25, 5,830.28 and 1,112.96 is: 1,669.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.25 : 5,830.28 = 1,112.96 : x
  2. Step 2: Convert to fraction form
    3,886.25/5,830.28 = 1,112.96/x
  3. Step 3: Cross multiply
    3,886.25x = 5,830.28 × 1,112.96
  4. Step 4: Simplify right side
    3,886.25x = 6,488,833.71
  5. Step 5: Solve for x
    x = 6,488,833.71/3,886.25
  6. Step 6: Final answer
    x = 1,669.69

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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.