Home / 1,360.28-2,040.08-386.48

Finding the Fourth Proportional to 1,360.28, 2,040.08 and 386.48

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Solution

The fourth proportional to 1,360.28, 2,040.08 and 386.48 is: 579.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.28 : 2,040.08 = 386.48 : x
  2. Step 2: Convert to fraction form
    1,360.28/2,040.08 = 386.48/x
  3. Step 3: Cross multiply
    1,360.28x = 2,040.08 × 386.48
  4. Step 4: Simplify right side
    1,360.28x = 788,450.12
  5. Step 5: Solve for x
    x = 788,450.12/1,360.28
  6. Step 6: Final answer
    x = 579.62

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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.