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Finding the Fourth Proportional to 3,039.36, 4,559.04 and 987.36

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Solution

The fourth proportional to 3,039.36, 4,559.04 and 987.36 is: 1,481.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,039.36 : 4,559.04 = 987.36 : x
  2. Step 2: Convert to fraction form
    3,039.36/4,559.04 = 987.36/x
  3. Step 3: Cross multiply
    3,039.36x = 4,559.04 × 987.36
  4. Step 4: Simplify right side
    3,039.36x = 4,501,413.73
  5. Step 5: Solve for x
    x = 4,501,413.73/3,039.36
  6. Step 6: Final answer
    x = 1,481.04

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1.5x scale

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.