Home / 1,241.19-1,862.01-408.30

Finding the Fourth Proportional to 1,241.19, 1,862.01 and 408.30

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Solution

The fourth proportional to 1,241.19, 1,862.01 and 408.30 is: 612.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.19 : 1,862.01 = 408.30 : x
  2. Step 2: Convert to fraction form
    1,241.19/1,862.01 = 408.30/x
  3. Step 3: Cross multiply
    1,241.19x = 1,862.01 × 408.30
  4. Step 4: Simplify right side
    1,241.19x = 760,260.21
  5. Step 5: Solve for x
    x = 760,260.21/1,241.19
  6. Step 6: Final answer
    x = 612.53

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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.