Home / 1,915.97-2,873.68-1,190.21

Finding the Fourth Proportional to 1,915.97, 2,873.68 and 1,190.21

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Solution

The fourth proportional to 1,915.97, 2,873.68 and 1,190.21 is: 1,785.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.97 : 2,873.68 = 1,190.21 : x
  2. Step 2: Convert to fraction form
    1,915.97/2,873.68 = 1,190.21/x
  3. Step 3: Cross multiply
    1,915.97x = 2,873.68 × 1,190.21
  4. Step 4: Simplify right side
    1,915.97x = 3,420,282.67
  5. Step 5: Solve for x
    x = 3,420,282.67/1,915.97
  6. Step 6: Final answer
    x = 1,785.14

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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.