Home / 1,079.31-1,619.24-386.04

Finding the Fourth Proportional to 1,079.31, 1,619.24 and 386.04

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Solution

The fourth proportional to 1,079.31, 1,619.24 and 386.04 is: 579.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.31 : 1,619.24 = 386.04 : x
  2. Step 2: Convert to fraction form
    1,079.31/1,619.24 = 386.04/x
  3. Step 3: Cross multiply
    1,079.31x = 1,619.24 × 386.04
  4. Step 4: Simplify right side
    1,079.31x = 625,096.42
  5. Step 5: Solve for x
    x = 625,096.42/1,079.31
  6. Step 6: Final answer
    x = 579.17

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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.