Home / 3,119.87-4,678.97-1,039.94

Finding the Fourth Proportional to 3,119.87, 4,678.97 and 1,039.94

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Solution

The fourth proportional to 3,119.87, 4,678.97 and 1,039.94 is: 1,559.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.87 : 4,678.97 = 1,039.94 : x
  2. Step 2: Convert to fraction form
    3,119.87/4,678.97 = 1,039.94/x
  3. Step 3: Cross multiply
    3,119.87x = 4,678.97 × 1,039.94
  4. Step 4: Simplify right side
    3,119.87x = 4,865,837.01
  5. Step 5: Solve for x
    x = 4,865,837.01/3,119.87
  6. Step 6: Final answer
    x = 1,559.63

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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.