Home / 5,555.25-7,666.25-3,198.15

Finding the Fourth Proportional to 5,555.25, 7,666.25 and 3,198.15

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Solution

The fourth proportional to 5,555.25, 7,666.25 and 3,198.15 is: 4,413.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,555.25 : 7,666.25 = 3,198.15 : x
  2. Step 2: Convert to fraction form
    5,555.25/7,666.25 = 3,198.15/x
  3. Step 3: Cross multiply
    5,555.25x = 7,666.25 × 3,198.15
  4. Step 4: Simplify right side
    5,555.25x = 24,517,801.45
  5. Step 5: Solve for x
    x = 24,517,801.45/5,555.25
  6. Step 6: Final answer
    x = 4,413.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.