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Finding the Fourth Proportional to 7,803.58, 11,705.37 and 1,960.19

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Solution

The fourth proportional to 7,803.58, 11,705.37 and 1,960.19 is: 2,940.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,803.58 : 11,705.37 = 1,960.19 : x
  2. Step 2: Convert to fraction form
    7,803.58/11,705.37 = 1,960.19/x
  3. Step 3: Cross multiply
    7,803.58x = 11,705.37 × 1,960.19
  4. Step 4: Simplify right side
    7,803.58x = 22,944,749.22
  5. Step 5: Solve for x
    x = 22,944,749.22/7,803.58
  6. Step 6: Final answer
    x = 2,940.29

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Double scale
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Similar ratio
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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.