Home / 3,087.03-4,629.30-1,138.80

Finding the Fourth Proportional to 3,087.03, 4,629.30 and 1,138.80

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Solution

The fourth proportional to 3,087.03, 4,629.30 and 1,138.80 is: 1,707.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.03 : 4,629.30 = 1,138.80 : x
  2. Step 2: Convert to fraction form
    3,087.03/4,629.30 = 1,138.80/x
  3. Step 3: Cross multiply
    3,087.03x = 4,629.30 × 1,138.80
  4. Step 4: Simplify right side
    3,087.03x = 5,271,846.84
  5. Step 5: Solve for x
    x = 5,271,846.84/3,087.03
  6. Step 6: Final answer
    x = 1,707.74

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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.