Home / 2,988-4,481.40-1,040.28

Finding the Fourth Proportional to 2,988, 4,481.40 and 1,040.28

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Solution

The fourth proportional to 2,988, 4,481.40 and 1,040.28 is: 1,560.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988 : 4,481.40 = 1,040.28 : x
  2. Step 2: Convert to fraction form
    2,988/4,481.40 = 1,040.28/x
  3. Step 3: Cross multiply
    2,988x = 4,481.40 × 1,040.28
  4. Step 4: Simplify right side
    2,988x = 4,661,910.79
  5. Step 5: Solve for x
    x = 4,661,910.79/2,988
  6. Step 6: Final answer
    x = 1,560.21

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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.