Home / 3,946.76-5,446.68-2,178.56

Finding the Fourth Proportional to 3,946.76, 5,446.68 and 2,178.56

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Solution

The fourth proportional to 3,946.76, 5,446.68 and 2,178.56 is: 3,006.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.76 : 5,446.68 = 2,178.56 : x
  2. Step 2: Convert to fraction form
    3,946.76/5,446.68 = 2,178.56/x
  3. Step 3: Cross multiply
    3,946.76x = 5,446.68 × 2,178.56
  4. Step 4: Simplify right side
    3,946.76x = 11,865,919.18
  5. Step 5: Solve for x
    x = 11,865,919.18/3,946.76
  6. Step 6: Final answer
    x = 3,006.50

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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.