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Finding the Fourth Proportional to 7,809.19, 11,713.98 and 1,965.89

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Solution

The fourth proportional to 7,809.19, 11,713.98 and 1,965.89 is: 2,948.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.19 : 11,713.98 = 1,965.89 : x
  2. Step 2: Convert to fraction form
    7,809.19/11,713.98 = 1,965.89/x
  3. Step 3: Cross multiply
    7,809.19x = 11,713.98 × 1,965.89
  4. Step 4: Simplify right side
    7,809.19x = 23,028,396.14
  5. Step 5: Solve for x
    x = 23,028,396.14/7,809.19
  6. Step 6: Final answer
    x = 2,948.88

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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.