Home / 2,290.74-3,435.48-1,120.14

Finding the Fourth Proportional to 2,290.74, 3,435.48 and 1,120.14

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Solution

The fourth proportional to 2,290.74, 3,435.48 and 1,120.14 is: 1,679.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.74 : 3,435.48 = 1,120.14 : x
  2. Step 2: Convert to fraction form
    2,290.74/3,435.48 = 1,120.14/x
  3. Step 3: Cross multiply
    2,290.74x = 3,435.48 × 1,120.14
  4. Step 4: Simplify right side
    2,290.74x = 3,848,218.57
  5. Step 5: Solve for x
    x = 3,848,218.57/2,290.74
  6. Step 6: Final answer
    x = 1,679.90

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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.