Home / 3,181.22-4,389.20-1,836.78

Finding the Fourth Proportional to 3,181.22, 4,389.20 and 1,836.78

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Solution

The fourth proportional to 3,181.22, 4,389.20 and 1,836.78 is: 2,534.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.22 : 4,389.20 = 1,836.78 : x
  2. Step 2: Convert to fraction form
    3,181.22/4,389.20 = 1,836.78/x
  3. Step 3: Cross multiply
    3,181.22x = 4,389.20 × 1,836.78
  4. Step 4: Simplify right side
    3,181.22x = 8,061,994.78
  5. Step 5: Solve for x
    x = 8,061,994.78/3,181.22
  6. Step 6: Final answer
    x = 2,534.25

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1.5x scale

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.