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Finding the Fourth Proportional to 9,880.83, 13,636.79 and 6,480.70

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Solution

The fourth proportional to 9,880.83, 13,636.79 and 6,480.70 is: 8,944.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,880.83 : 13,636.79 = 6,480.70 : x
  2. Step 2: Convert to fraction form
    9,880.83/13,636.79 = 6,480.70/x
  3. Step 3: Cross multiply
    9,880.83x = 13,636.79 × 6,480.70
  4. Step 4: Simplify right side
    9,880.83x = 88,375,844.37
  5. Step 5: Solve for x
    x = 88,375,844.37/9,880.83
  6. Step 6: Final answer
    x = 8,944.17

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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.