Home / 2,919.21-4,028.60-1,660.45

Finding the Fourth Proportional to 2,919.21, 4,028.60 and 1,660.45

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Solution

The fourth proportional to 2,919.21, 4,028.60 and 1,660.45 is: 2,291.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.21 : 4,028.60 = 1,660.45 : x
  2. Step 2: Convert to fraction form
    2,919.21/4,028.60 = 1,660.45/x
  3. Step 3: Cross multiply
    2,919.21x = 4,028.60 × 1,660.45
  4. Step 4: Simplify right side
    2,919.21x = 6,689,264.17
  5. Step 5: Solve for x
    x = 6,689,264.17/2,919.21
  6. Step 6: Final answer
    x = 2,291.46

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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.