Home / 5,518.17-8,269.35-4,279.79

Finding the Fourth Proportional to 5,518.17, 8,269.35 and 4,279.79

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Solution

The fourth proportional to 5,518.17, 8,269.35 and 4,279.79 is: 6,413.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.17 : 8,269.35 = 4,279.79 : x
  2. Step 2: Convert to fraction form
    5,518.17/8,269.35 = 4,279.79/x
  3. Step 3: Cross multiply
    5,518.17x = 8,269.35 × 4,279.79
  4. Step 4: Simplify right side
    5,518.17x = 35,391,040.09
  5. Step 5: Solve for x
    x = 35,391,040.09/5,518.17
  6. Step 6: Final answer
    x = 6,413.55

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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.