Home / 2,939.49-4,055.79-2,152.17

Finding the Fourth Proportional to 2,939.49, 4,055.79 and 2,152.17

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Solution

The fourth proportional to 2,939.49, 4,055.79 and 2,152.17 is: 2,969.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.49 : 4,055.79 = 2,152.17 : x
  2. Step 2: Convert to fraction form
    2,939.49/4,055.79 = 2,152.17/x
  3. Step 3: Cross multiply
    2,939.49x = 4,055.79 × 2,152.17
  4. Step 4: Simplify right side
    2,939.49x = 8,728,749.56
  5. Step 5: Solve for x
    x = 8,728,749.56/2,939.49
  6. Step 6: Final answer
    x = 2,969.48

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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.