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Finding the Fourth Proportional to 8,413.64, 12,620.46 and 2,864.13

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Solution

The fourth proportional to 8,413.64, 12,620.46 and 2,864.13 is: 4,296.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.64 : 12,620.46 = 2,864.13 : x
  2. Step 2: Convert to fraction form
    8,413.64/12,620.46 = 2,864.13/x
  3. Step 3: Cross multiply
    8,413.64x = 12,620.46 × 2,864.13
  4. Step 4: Simplify right side
    8,413.64x = 36,146,648.84
  5. Step 5: Solve for x
    x = 36,146,648.84/8,413.64
  6. Step 6: Final answer
    x = 4,296.20

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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.