Home / 3,946.98-5,446.85-2,178.69

Finding the Fourth Proportional to 3,946.98, 5,446.85 and 2,178.69

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Solution

The fourth proportional to 3,946.98, 5,446.85 and 2,178.69 is: 3,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.98 : 5,446.85 = 2,178.69 : x
  2. Step 2: Convert to fraction form
    3,946.98/5,446.85 = 2,178.69/x
  3. Step 3: Cross multiply
    3,946.98x = 5,446.85 × 2,178.69
  4. Step 4: Simplify right side
    3,946.98x = 11,866,986.73
  5. Step 5: Solve for x
    x = 11,866,986.73/3,946.98
  6. Step 6: Final answer
    x = 3,006.60

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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.