Home / 2,919.87-4,028.72-1,660.64

Finding the Fourth Proportional to 2,919.87, 4,028.72 and 1,660.64

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Solution

The fourth proportional to 2,919.87, 4,028.72 and 1,660.64 is: 2,291.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.87 : 4,028.72 = 1,660.64 : x
  2. Step 2: Convert to fraction form
    2,919.87/4,028.72 = 1,660.64/x
  3. Step 3: Cross multiply
    2,919.87x = 4,028.72 × 1,660.64
  4. Step 4: Simplify right side
    2,919.87x = 6,690,225.13
  5. Step 5: Solve for x
    x = 6,690,225.13/2,919.87
  6. Step 6: Final answer
    x = 2,291.27

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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.