Home / 2,919.45-4,028.64-1,660.42

Finding the Fourth Proportional to 2,919.45, 4,028.64 and 1,660.42

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Solution

The fourth proportional to 2,919.45, 4,028.64 and 1,660.42 is: 2,291.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.45 : 4,028.64 = 1,660.42 : x
  2. Step 2: Convert to fraction form
    2,919.45/4,028.64 = 1,660.42/x
  3. Step 3: Cross multiply
    2,919.45x = 4,028.64 × 1,660.42
  4. Step 4: Simplify right side
    2,919.45x = 6,689,214.29
  5. Step 5: Solve for x
    x = 6,689,214.29/2,919.45
  6. Step 6: Final answer
    x = 2,291.26

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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.