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Finding the Fourth Proportional to 8,776.66, 12,108.36 and 5,413.63

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Solution

The fourth proportional to 8,776.66, 12,108.36 and 5,413.63 is: 7,468.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,776.66 : 12,108.36 = 5,413.63 : x
  2. Step 2: Convert to fraction form
    8,776.66/12,108.36 = 5,413.63/x
  3. Step 3: Cross multiply
    8,776.66x = 12,108.36 × 5,413.63
  4. Step 4: Simplify right side
    8,776.66x = 65,550,180.95
  5. Step 5: Solve for x
    x = 65,550,180.95/8,776.66
  6. Step 6: Final answer
    x = 7,468.69

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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.