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Finding the Fourth Proportional to 7,679.71, 11,519.01 and 2,056.96

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Solution

The fourth proportional to 7,679.71, 11,519.01 and 2,056.96 is: 3,085.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.71 : 11,519.01 = 2,056.96 : x
  2. Step 2: Convert to fraction form
    7,679.71/11,519.01 = 2,056.96/x
  3. Step 3: Cross multiply
    7,679.71x = 11,519.01 × 2,056.96
  4. Step 4: Simplify right side
    7,679.71x = 23,694,142.81
  5. Step 5: Solve for x
    x = 23,694,142.81/7,679.71
  6. Step 6: Final answer
    x = 3,085.29

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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.