Home / 1,360.24-2,040.38-386.34

Finding the Fourth Proportional to 1,360.24, 2,040.38 and 386.34

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Solution

The fourth proportional to 1,360.24, 2,040.38 and 386.34 is: 579.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.24 : 2,040.38 = 386.34 : x
  2. Step 2: Convert to fraction form
    1,360.24/2,040.38 = 386.34/x
  3. Step 3: Cross multiply
    1,360.24x = 2,040.38 × 386.34
  4. Step 4: Simplify right side
    1,360.24x = 788,280.34
  5. Step 5: Solve for x
    x = 788,280.34/1,360.24
  6. Step 6: Final answer
    x = 579.52

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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.