Home / 2,918.30-4,028.55-1,739.78

Finding the Fourth Proportional to 2,918.30, 4,028.55 and 1,739.78

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Solution

The fourth proportional to 2,918.30, 4,028.55 and 1,739.78 is: 2,401.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.30 : 4,028.55 = 1,739.78 : x
  2. Step 2: Convert to fraction form
    2,918.30/4,028.55 = 1,739.78/x
  3. Step 3: Cross multiply
    2,918.30x = 4,028.55 × 1,739.78
  4. Step 4: Simplify right side
    2,918.30x = 7,008,790.72
  5. Step 5: Solve for x
    x = 7,008,790.72/2,918.30
  6. Step 6: Final answer
    x = 2,401.67

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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.