Home / 1,360.19-2,039.94-386.30

Finding the Fourth Proportional to 1,360.19, 2,039.94 and 386.30

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Solution

The fourth proportional to 1,360.19, 2,039.94 and 386.30 is: 579.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.19 : 2,039.94 = 386.30 : x
  2. Step 2: Convert to fraction form
    1,360.19/2,039.94 = 386.30/x
  3. Step 3: Cross multiply
    1,360.19x = 2,039.94 × 386.30
  4. Step 4: Simplify right side
    1,360.19x = 788,018.62
  5. Step 5: Solve for x
    x = 788,018.62/1,360.19
  6. Step 6: Final answer
    x = 579.35

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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.