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Finding the Fourth Proportional to 8,951.40, 12,352.91 and 5,413.59

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Solution

The fourth proportional to 8,951.40, 12,352.91 and 5,413.59 is: 7,470.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.40 : 12,352.91 = 5,413.59 : x
  2. Step 2: Convert to fraction form
    8,951.40/12,352.91 = 5,413.59/x
  3. Step 3: Cross multiply
    8,951.40x = 12,352.91 × 5,413.59
  4. Step 4: Simplify right side
    8,951.40x = 66,873,562.98
  5. Step 5: Solve for x
    x = 66,873,562.98/8,951.40
  6. Step 6: Final answer
    x = 7,470.74

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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.