Home / 2,930.27-4,042.55-2,142.95

Finding the Fourth Proportional to 2,930.27, 4,042.55 and 2,142.95

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Solution

The fourth proportional to 2,930.27, 4,042.55 and 2,142.95 is: 2,956.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.27 : 4,042.55 = 2,142.95 : x
  2. Step 2: Convert to fraction form
    2,930.27/4,042.55 = 2,142.95/x
  3. Step 3: Cross multiply
    2,930.27x = 4,042.55 × 2,142.95
  4. Step 4: Simplify right side
    2,930.27x = 8,662,951.60
  5. Step 5: Solve for x
    x = 8,662,951.60/2,930.27
  6. Step 6: Final answer
    x = 2,956.37

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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.