Home / 2,989.87-4,485.09-1,015.69

Finding the Fourth Proportional to 2,989.87, 4,485.09 and 1,015.69

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Solution

The fourth proportional to 2,989.87, 4,485.09 and 1,015.69 is: 1,523.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.87 : 4,485.09 = 1,015.69 : x
  2. Step 2: Convert to fraction form
    2,989.87/4,485.09 = 1,015.69/x
  3. Step 3: Cross multiply
    2,989.87x = 4,485.09 × 1,015.69
  4. Step 4: Simplify right side
    2,989.87x = 4,555,461.06
  5. Step 5: Solve for x
    x = 4,555,461.06/2,989.87
  6. Step 6: Final answer
    x = 1,523.63

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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.