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Finding the Fourth Proportional to 3,518.74, 4,855.94 and 1,946.85

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Solution

The fourth proportional to 3,518.74, 4,855.94 and 1,946.85 is: 2,686.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.74 : 4,855.94 = 1,946.85 : x
  2. Step 2: Convert to fraction form
    3,518.74/4,855.94 = 1,946.85/x
  3. Step 3: Cross multiply
    3,518.74x = 4,855.94 × 1,946.85
  4. Step 4: Simplify right side
    3,518.74x = 9,453,786.79
  5. Step 5: Solve for x
    x = 9,453,786.79/3,518.74
  6. Step 6: Final answer
    x = 2,686.70

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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.