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Finding the Fourth Proportional to 9,413.68, 12,990.88 and 5,876.88

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Solution

The fourth proportional to 9,413.68, 12,990.88 and 5,876.88 is: 8,110.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,413.68 : 12,990.88 = 5,876.88 : x
  2. Step 2: Convert to fraction form
    9,413.68/12,990.88 = 5,876.88/x
  3. Step 3: Cross multiply
    9,413.68x = 12,990.88 × 5,876.88
  4. Step 4: Simplify right side
    9,413.68x = 76,345,842.85
  5. Step 5: Solve for x
    x = 76,345,842.85/9,413.68
  6. Step 6: Final answer
    x = 8,110.10

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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.