Home / 3,360.54-5,040.80-1,387.28

Finding the Fourth Proportional to 3,360.54, 5,040.80 and 1,387.28

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Solution

The fourth proportional to 3,360.54, 5,040.80 and 1,387.28 is: 2,080.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,360.54 : 5,040.80 = 1,387.28 : x
  2. Step 2: Convert to fraction form
    3,360.54/5,040.80 = 1,387.28/x
  3. Step 3: Cross multiply
    3,360.54x = 5,040.80 × 1,387.28
  4. Step 4: Simplify right side
    3,360.54x = 6,993,017.09
  5. Step 5: Solve for x
    x = 6,993,017.09/3,360.54
  6. Step 6: Final answer
    x = 2,080.92

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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.