Home / 2,919.81-4,028.37-1,660.74

Finding the Fourth Proportional to 2,919.81, 4,028.37 and 1,660.74

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Solution

The fourth proportional to 2,919.81, 4,028.37 and 1,660.74 is: 2,291.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.81 : 4,028.37 = 1,660.74 : x
  2. Step 2: Convert to fraction form
    2,919.81/4,028.37 = 1,660.74/x
  3. Step 3: Cross multiply
    2,919.81x = 4,028.37 × 1,660.74
  4. Step 4: Simplify right side
    2,919.81x = 6,690,075.19
  5. Step 5: Solve for x
    x = 6,690,075.19/2,919.81
  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.