Home / 2,986.30-4,480.77-1,039.90

Finding the Fourth Proportional to 2,986.30, 4,480.77 and 1,039.90

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Solution

The fourth proportional to 2,986.30, 4,480.77 and 1,039.90 is: 1,560.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.30 : 4,480.77 = 1,039.90 : x
  2. Step 2: Convert to fraction form
    2,986.30/4,480.77 = 1,039.90/x
  3. Step 3: Cross multiply
    2,986.30x = 4,480.77 × 1,039.90
  4. Step 4: Simplify right side
    2,986.30x = 4,659,552.72
  5. Step 5: Solve for x
    x = 4,659,552.72/2,986.30
  6. Step 6: Final answer
    x = 1,560.31

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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.