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Finding the Fourth Proportional to 8,880.78, 13,323.38 and 2,640.77

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Solution

The fourth proportional to 8,880.78, 13,323.38 and 2,640.77 is: 3,961.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.78 : 13,323.38 = 2,640.77 : x
  2. Step 2: Convert to fraction form
    8,880.78/13,323.38 = 2,640.77/x
  3. Step 3: Cross multiply
    8,880.78x = 13,323.38 × 2,640.77
  4. Step 4: Simplify right side
    8,880.78x = 35,183,952.34
  5. Step 5: Solve for x
    x = 35,183,952.34/8,880.78
  6. Step 6: Final answer
    x = 3,961.81

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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.