Home / 3,028.78-4,179.16-1,702.20

Finding the Fourth Proportional to 3,028.78, 4,179.16 and 1,702.20

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Solution

The fourth proportional to 3,028.78, 4,179.16 and 1,702.20 is: 2,348.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,028.78 : 4,179.16 = 1,702.20 : x
  2. Step 2: Convert to fraction form
    3,028.78/4,179.16 = 1,702.20/x
  3. Step 3: Cross multiply
    3,028.78x = 4,179.16 × 1,702.20
  4. Step 4: Simplify right side
    3,028.78x = 7,113,766.15
  5. Step 5: Solve for x
    x = 7,113,766.15/3,028.78
  6. Step 6: Final answer
    x = 2,348.72

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1.5x scale

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.