Home / 2,351.78-3,245.70-1,357.28

Finding the Fourth Proportional to 2,351.78, 3,245.70 and 1,357.28

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Solution

The fourth proportional to 2,351.78, 3,245.70 and 1,357.28 is: 1,873.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,351.78 : 3,245.70 = 1,357.28 : x
  2. Step 2: Convert to fraction form
    2,351.78/3,245.70 = 1,357.28/x
  3. Step 3: Cross multiply
    2,351.78x = 3,245.70 × 1,357.28
  4. Step 4: Simplify right side
    2,351.78x = 4,405,323.70
  5. Step 5: Solve for x
    x = 4,405,323.70/2,351.78
  6. Step 6: Final answer
    x = 1,873.19

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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.