Home / 2,939.69-4,053.92-1,984.70

Finding the Fourth Proportional to 2,939.69, 4,053.92 and 1,984.70

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Solution

The fourth proportional to 2,939.69, 4,053.92 and 1,984.70 is: 2,736.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.69 : 4,053.92 = 1,984.70 : x
  2. Step 2: Convert to fraction form
    2,939.69/4,053.92 = 1,984.70/x
  3. Step 3: Cross multiply
    2,939.69x = 4,053.92 × 1,984.70
  4. Step 4: Simplify right side
    2,939.69x = 8,045,831.98
  5. Step 5: Solve for x
    x = 8,045,831.98/2,939.69
  6. Step 6: Final answer
    x = 2,736.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.