Home / 3,119.27-4,678.39-1,270.31

Finding the Fourth Proportional to 3,119.27, 4,678.39 and 1,270.31

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Solution

The fourth proportional to 3,119.27, 4,678.39 and 1,270.31 is: 1,905.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.27 : 4,678.39 = 1,270.31 : x
  2. Step 2: Convert to fraction form
    3,119.27/4,678.39 = 1,270.31/x
  3. Step 3: Cross multiply
    3,119.27x = 4,678.39 × 1,270.31
  4. Step 4: Simplify right side
    3,119.27x = 5,942,983.80
  5. Step 5: Solve for x
    x = 5,942,983.80/3,119.27
  6. Step 6: Final answer
    x = 1,905.25

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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.