Home / 8,939.34-13,413.56-3,678.39

Finding the Fourth Proportional to 8,939.34, 13,413.56 and 3,678.39

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Solution

The fourth proportional to 8,939.34, 13,413.56 and 3,678.39 is: 5,519.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.34 : 13,413.56 = 3,678.39 : x
  2. Step 2: Convert to fraction form
    8,939.34/13,413.56 = 3,678.39/x
  3. Step 3: Cross multiply
    8,939.34x = 13,413.56 × 3,678.39
  4. Step 4: Simplify right side
    8,939.34x = 49,340,304.97
  5. Step 5: Solve for x
    x = 49,340,304.97/8,939.34
  6. Step 6: Final answer
    x = 5,519.46

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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.