Home / 2,745.24-4,117.14-989.88

Finding the Fourth Proportional to 2,745.24, 4,117.14 and 989.88

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Solution

The fourth proportional to 2,745.24, 4,117.14 and 989.88 is: 1,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,745.24 : 4,117.14 = 989.88 : x
  2. Step 2: Convert to fraction form
    2,745.24/4,117.14 = 989.88/x
  3. Step 3: Cross multiply
    2,745.24x = 4,117.14 × 989.88
  4. Step 4: Simplify right side
    2,745.24x = 4,075,474.54
  5. Step 5: Solve for x
    x = 4,075,474.54/2,745.24
  6. Step 6: Final answer
    x = 1,484.56

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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.