Home / 7,679.63-11,519.31-2,485.51

Finding the Fourth Proportional to 7,679.63, 11,519.31 and 2,485.51

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Solution

The fourth proportional to 7,679.63, 11,519.31 and 2,485.51 is: 3,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.63 : 11,519.31 = 2,485.51 : x
  2. Step 2: Convert to fraction form
    7,679.63/11,519.31 = 2,485.51/x
  3. Step 3: Cross multiply
    7,679.63x = 11,519.31 × 2,485.51
  4. Step 4: Simplify right side
    7,679.63x = 28,631,360.20
  5. Step 5: Solve for x
    x = 28,631,360.20/7,679.63
  6. Step 6: Final answer
    x = 3,728.22

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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.