Home / 7,687.58-11,530.69-2,140.56

Finding the Fourth Proportional to 7,687.58, 11,530.69 and 2,140.56

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Solution

The fourth proportional to 7,687.58, 11,530.69 and 2,140.56 is: 3,210.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,687.58 : 11,530.69 = 2,140.56 : x
  2. Step 2: Convert to fraction form
    7,687.58/11,530.69 = 2,140.56/x
  3. Step 3: Cross multiply
    7,687.58x = 11,530.69 × 2,140.56
  4. Step 4: Simplify right side
    7,687.58x = 24,682,128.44
  5. Step 5: Solve for x
    x = 24,682,128.44/7,687.58
  6. Step 6: Final answer
    x = 3,210.65

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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.