Home / 2,181.90-3,272.84-949.14

Finding the Fourth Proportional to 2,181.90, 3,272.84 and 949.14

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Solution

The fourth proportional to 2,181.90, 3,272.84 and 949.14 is: 1,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.90 : 3,272.84 = 949.14 : x
  2. Step 2: Convert to fraction form
    2,181.90/3,272.84 = 949.14/x
  3. Step 3: Cross multiply
    2,181.90x = 3,272.84 × 949.14
  4. Step 4: Simplify right side
    2,181.90x = 3,106,378.61
  5. Step 5: Solve for x
    x = 3,106,378.61/2,181.90
  6. Step 6: Final answer
    x = 1,423.70

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1.5x scale

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.