Home / 1,079.35-1,619.37-386.01

Finding the Fourth Proportional to 1,079.35, 1,619.37 and 386.01

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Solution

The fourth proportional to 1,079.35, 1,619.37 and 386.01 is: 579.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.35 : 1,619.37 = 386.01 : x
  2. Step 2: Convert to fraction form
    1,079.35/1,619.37 = 386.01/x
  3. Step 3: Cross multiply
    1,079.35x = 1,619.37 × 386.01
  4. Step 4: Simplify right side
    1,079.35x = 625,093.01
  5. Step 5: Solve for x
    x = 625,093.01/1,079.35
  6. Step 6: Final answer
    x = 579.14

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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.