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Finding the Fourth Proportional to 7,679.51, 11,519.23 and 2,999.99

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Solution

The fourth proportional to 7,679.51, 11,519.23 and 2,999.99 is: 4,499.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.51 : 11,519.23 = 2,999.99 : x
  2. Step 2: Convert to fraction form
    7,679.51/11,519.23 = 2,999.99/x
  3. Step 3: Cross multiply
    7,679.51x = 11,519.23 × 2,999.99
  4. Step 4: Simplify right side
    7,679.51x = 34,557,574.81
  5. Step 5: Solve for x
    x = 34,557,574.81/7,679.51
  6. Step 6: Final answer
    x = 4,499.97

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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.