Home / 3,078.44-4,618.72-1,690.00

Finding the Fourth Proportional to 3,078.44, 4,618.72 and 1,690.00

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Solution

The fourth proportional to 3,078.44, 4,618.72 and 1,690.00 is: 2,535.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.44 : 4,618.72 = 1,690.00 : x
  2. Step 2: Convert to fraction form
    3,078.44/4,618.72 = 1,690.00/x
  3. Step 3: Cross multiply
    3,078.44x = 4,618.72 × 1,690.00
  4. Step 4: Simplify right side
    3,078.44x = 7,805,627.37
  5. Step 5: Solve for x
    x = 7,805,627.37/3,078.44
  6. Step 6: Final answer
    x = 2,535.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.