Home / 1,360.27-2,039.79-386.14

Finding the Fourth Proportional to 1,360.27, 2,039.79 and 386.14

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Solution

The fourth proportional to 1,360.27, 2,039.79 and 386.14 is: 579.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.27 : 2,039.79 = 386.14 : x
  2. Step 2: Convert to fraction form
    1,360.27/2,039.79 = 386.14/x
  3. Step 3: Cross multiply
    1,360.27x = 2,039.79 × 386.14
  4. Step 4: Simplify right side
    1,360.27x = 787,644.51
  5. Step 5: Solve for x
    x = 787,644.51/1,360.27
  6. Step 6: Final answer
    x = 579.04

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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.