Home / 2,690.12-4,029.60-1,304.60

Finding the Fourth Proportional to 2,690.12, 4,029.60 and 1,304.60

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Solution

The fourth proportional to 2,690.12, 4,029.60 and 1,304.60 is: 1,954.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.12 : 4,029.60 = 1,304.60 : x
  2. Step 2: Convert to fraction form
    2,690.12/4,029.60 = 1,304.60/x
  3. Step 3: Cross multiply
    2,690.12x = 4,029.60 × 1,304.60
  4. Step 4: Simplify right side
    2,690.12x = 5,257,016.16
  5. Step 5: Solve for x
    x = 5,257,016.16/2,690.12
  6. Step 6: Final answer
    x = 1,954.19

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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.