Home / 2,986.77-4,479.99-1,039.11

Finding the Fourth Proportional to 2,986.77, 4,479.99 and 1,039.11

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Solution

The fourth proportional to 2,986.77, 4,479.99 and 1,039.11 is: 1,558.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.77 : 4,479.99 = 1,039.11 : x
  2. Step 2: Convert to fraction form
    2,986.77/4,479.99 = 1,039.11/x
  3. Step 3: Cross multiply
    2,986.77x = 4,479.99 × 1,039.11
  4. Step 4: Simplify right side
    2,986.77x = 4,655,202.41
  5. Step 5: Solve for x
    x = 4,655,202.41/2,986.77
  6. Step 6: Final answer
    x = 1,558.61

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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.