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Finding the Fourth Proportional to 9,879.84, 13,626.72 and 6,730.56

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Solution

The fourth proportional to 9,879.84, 13,626.72 and 6,730.56 is: 9,283.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.84 : 13,626.72 = 6,730.56 : x
  2. Step 2: Convert to fraction form
    9,879.84/13,626.72 = 6,730.56/x
  3. Step 3: Cross multiply
    9,879.84x = 13,626.72 × 6,730.56
  4. Step 4: Simplify right side
    9,879.84x = 91,715,456.56
  5. Step 5: Solve for x
    x = 91,715,456.56/9,879.84
  6. Step 6: Final answer
    x = 9,283.09

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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.