Home / 1,360.34-2,040.44-386.31

Finding the Fourth Proportional to 1,360.34, 2,040.44 and 386.31

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Solution

The fourth proportional to 1,360.34, 2,040.44 and 386.31 is: 579.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.34 : 2,040.44 = 386.31 : x
  2. Step 2: Convert to fraction form
    1,360.34/2,040.44 = 386.31/x
  3. Step 3: Cross multiply
    1,360.34x = 2,040.44 × 386.31
  4. Step 4: Simplify right side
    1,360.34x = 788,240.44
  5. Step 5: Solve for x
    x = 788,240.44/1,360.34
  6. Step 6: Final answer
    x = 579.45

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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.