Home / 3,181.63-4,390.69-1,765.35

Finding the Fourth Proportional to 3,181.63, 4,390.69 and 1,765.35

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Solution

The fourth proportional to 3,181.63, 4,390.69 and 1,765.35 is: 2,436.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.63 : 4,390.69 = 1,765.35 : x
  2. Step 2: Convert to fraction form
    3,181.63/4,390.69 = 1,765.35/x
  3. Step 3: Cross multiply
    3,181.63x = 4,390.69 × 1,765.35
  4. Step 4: Simplify right side
    3,181.63x = 7,751,104.59
  5. Step 5: Solve for x
    x = 7,751,104.59/3,181.63
  6. Step 6: Final answer
    x = 2,436.21

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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.