Home / 2,245.23-3,368.30-685.35

Finding the Fourth Proportional to 2,245.23, 3,368.30 and 685.35

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Solution

The fourth proportional to 2,245.23, 3,368.30 and 685.35 is: 1,028.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245.23 : 3,368.30 = 685.35 : x
  2. Step 2: Convert to fraction form
    2,245.23/3,368.30 = 685.35/x
  3. Step 3: Cross multiply
    2,245.23x = 3,368.30 × 685.35
  4. Step 4: Simplify right side
    2,245.23x = 2,308,460.98
  5. Step 5: Solve for x
    x = 2,308,460.98/2,245.23
  6. Step 6: Final answer
    x = 1,028.16

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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.