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Finding the Fourth Proportional to 8,995.76, 12,413.99 and 5,219.55

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Solution

The fourth proportional to 8,995.76, 12,413.99 and 5,219.55 is: 7,202.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,995.76 : 12,413.99 = 5,219.55 : x
  2. Step 2: Convert to fraction form
    8,995.76/12,413.99 = 5,219.55/x
  3. Step 3: Cross multiply
    8,995.76x = 12,413.99 × 5,219.55
  4. Step 4: Simplify right side
    8,995.76x = 64,795,441.50
  5. Step 5: Solve for x
    x = 64,795,441.50/8,995.76
  6. Step 6: Final answer
    x = 7,202.89

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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.