Home / 3,181.68-4,391.16-2,119.44

Finding the Fourth Proportional to 3,181.68, 4,391.16 and 2,119.44

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Solution

The fourth proportional to 3,181.68, 4,391.16 and 2,119.44 is: 2,925.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.68 : 4,391.16 = 2,119.44 : x
  2. Step 2: Convert to fraction form
    3,181.68/4,391.16 = 2,119.44/x
  3. Step 3: Cross multiply
    3,181.68x = 4,391.16 × 2,119.44
  4. Step 4: Simplify right side
    3,181.68x = 9,306,800.15
  5. Step 5: Solve for x
    x = 9,306,800.15/3,181.68
  6. Step 6: Final answer
    x = 2,925.12

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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.