Home / 2,919-4,028.22-1,871.67

Finding the Fourth Proportional to 2,919, 4,028.22 and 1,871.67

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Solution

The fourth proportional to 2,919, 4,028.22 and 1,871.67 is: 2,582.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919 : 4,028.22 = 1,871.67 : x
  2. Step 2: Convert to fraction form
    2,919/4,028.22 = 1,871.67/x
  3. Step 3: Cross multiply
    2,919x = 4,028.22 × 1,871.67
  4. Step 4: Simplify right side
    2,919x = 7,539,498.53
  5. Step 5: Solve for x
    x = 7,539,498.53/2,919
  6. Step 6: Final answer
    x = 2,582.90

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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.