Home / 1,396.23-2,090.49-847.05

Finding the Fourth Proportional to 1,396.23, 2,090.49 and 847.05

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Solution

The fourth proportional to 1,396.23, 2,090.49 and 847.05 is: 1,268.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.23 : 2,090.49 = 847.05 : x
  2. Step 2: Convert to fraction form
    1,396.23/2,090.49 = 847.05/x
  3. Step 3: Cross multiply
    1,396.23x = 2,090.49 × 847.05
  4. Step 4: Simplify right side
    1,396.23x = 1,770,749.55
  5. Step 5: Solve for x
    x = 1,770,749.55/1,396.23
  6. Step 6: Final answer
    x = 1,268.24

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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.