Home / 3,119.23-4,679.05-1,039.15

Finding the Fourth Proportional to 3,119.23, 4,679.05 and 1,039.15

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Solution

The fourth proportional to 3,119.23, 4,679.05 and 1,039.15 is: 1,558.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.23 : 4,679.05 = 1,039.15 : x
  2. Step 2: Convert to fraction form
    3,119.23/4,679.05 = 1,039.15/x
  3. Step 3: Cross multiply
    3,119.23x = 4,679.05 × 1,039.15
  4. Step 4: Simplify right side
    3,119.23x = 4,862,234.81
  5. Step 5: Solve for x
    x = 4,862,234.81/3,119.23
  6. Step 6: Final answer
    x = 1,558.79

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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.