Home / 3,181.39-4,390.40-1,765.10

Finding the Fourth Proportional to 3,181.39, 4,390.40 and 1,765.10

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Solution

The fourth proportional to 3,181.39, 4,390.40 and 1,765.10 is: 2,435.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.39 : 4,390.40 = 1,765.10 : x
  2. Step 2: Convert to fraction form
    3,181.39/4,390.40 = 1,765.10/x
  3. Step 3: Cross multiply
    3,181.39x = 4,390.40 × 1,765.10
  4. Step 4: Simplify right side
    3,181.39x = 7,749,495.04
  5. Step 5: Solve for x
    x = 7,749,495.04/3,181.39
  6. Step 6: Final answer
    x = 2,435.88

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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.