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Finding the Fourth Proportional to 2,939.22, 4,055.99 and 1,612.89

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Solution

The fourth proportional to 2,939.22, 4,055.99 and 1,612.89 is: 2,225.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.22 : 4,055.99 = 1,612.89 : x
  2. Step 2: Convert to fraction form
    2,939.22/4,055.99 = 1,612.89/x
  3. Step 3: Cross multiply
    2,939.22x = 4,055.99 × 1,612.89
  4. Step 4: Simplify right side
    2,939.22x = 6,541,857.65
  5. Step 5: Solve for x
    x = 6,541,857.65/2,939.22
  6. Step 6: Final answer
    x = 2,225.71

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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.