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Finding the Fourth Proportional to 6,378.80, 8,802.72 and 3,584.28

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Solution

The fourth proportional to 6,378.80, 8,802.72 and 3,584.28 is: 4,946.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.80 : 8,802.72 = 3,584.28 : x
  2. Step 2: Convert to fraction form
    6,378.80/8,802.72 = 3,584.28/x
  3. Step 3: Cross multiply
    6,378.80x = 8,802.72 × 3,584.28
  4. Step 4: Simplify right side
    6,378.80x = 31,551,413.24
  5. Step 5: Solve for x
    x = 31,551,413.24/6,378.80
  6. Step 6: Final answer
    x = 4,946.29

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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.