Home / 3,119.42-4,679.87-1,039.43

Finding the Fourth Proportional to 3,119.42, 4,679.87 and 1,039.43

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Solution

The fourth proportional to 3,119.42, 4,679.87 and 1,039.43 is: 1,559.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.42 : 4,679.87 = 1,039.43 : x
  2. Step 2: Convert to fraction form
    3,119.42/4,679.87 = 1,039.43/x
  3. Step 3: Cross multiply
    3,119.42x = 4,679.87 × 1,039.43
  4. Step 4: Simplify right side
    3,119.42x = 4,864,403.78
  5. Step 5: Solve for x
    x = 4,864,403.78/3,119.42
  6. Step 6: Final answer
    x = 1,559.40

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1.5x scale

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.