Home / 3,946.40-5,918.13-1,446.78

Finding the Fourth Proportional to 3,946.40, 5,918.13 and 1,446.78

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Solution

The fourth proportional to 3,946.40, 5,918.13 and 1,446.78 is: 2,169.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.40 : 5,918.13 = 1,446.78 : x
  2. Step 2: Convert to fraction form
    3,946.40/5,918.13 = 1,446.78/x
  3. Step 3: Cross multiply
    3,946.40x = 5,918.13 × 1,446.78
  4. Step 4: Simplify right side
    3,946.40x = 8,562,221.02
  5. Step 5: Solve for x
    x = 8,562,221.02/3,946.40
  6. Step 6: Final answer
    x = 2,169.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.