Home / 7,619.95-11,429.97-2,688.47

Finding the Fourth Proportional to 7,619.95, 11,429.97 and 2,688.47

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Solution

The fourth proportional to 7,619.95, 11,429.97 and 2,688.47 is: 4,032.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.95 : 11,429.97 = 2,688.47 : x
  2. Step 2: Convert to fraction form
    7,619.95/11,429.97 = 2,688.47/x
  3. Step 3: Cross multiply
    7,619.95x = 11,429.97 × 2,688.47
  4. Step 4: Simplify right side
    7,619.95x = 30,729,131.45
  5. Step 5: Solve for x
    x = 30,729,131.45/7,619.95
  6. Step 6: Final answer
    x = 4,032.72

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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.