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Finding the Fourth Proportional to 4,939.70, 6,814.13 and 3,051.70

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Solution

The fourth proportional to 4,939.70, 6,814.13 and 3,051.70 is: 4,209.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.70 : 6,814.13 = 3,051.70 : x
  2. Step 2: Convert to fraction form
    4,939.70/6,814.13 = 3,051.70/x
  3. Step 3: Cross multiply
    4,939.70x = 6,814.13 × 3,051.70
  4. Step 4: Simplify right side
    4,939.70x = 20,794,680.52
  5. Step 5: Solve for x
    x = 20,794,680.52/4,939.70
  6. Step 6: Final answer
    x = 4,209.71

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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.