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Finding the Fourth Proportional to 8,997.84, 12,413.16 and 5,220.72

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Solution

The fourth proportional to 8,997.84, 12,413.16 and 5,220.72 is: 7,202.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,997.84 : 12,413.16 = 5,220.72 : x
  2. Step 2: Convert to fraction form
    8,997.84/12,413.16 = 5,220.72/x
  3. Step 3: Cross multiply
    8,997.84x = 12,413.16 × 5,220.72
  4. Step 4: Simplify right side
    8,997.84x = 64,805,632.68
  5. Step 5: Solve for x
    x = 64,805,632.68/8,997.84
  6. Step 6: Final answer
    x = 7,202.35

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Half scale
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Double scale
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Similar ratio
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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.