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Finding the Fourth Proportional to 3,964.60, 5,946.90 and 3,721.60

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Solution

The fourth proportional to 3,964.60, 5,946.90 and 3,721.60 is: 5,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,964.60 : 5,946.90 = 3,721.60 : x
  2. Step 2: Convert to fraction form
    3,964.60/5,946.90 = 3,721.60/x
  3. Step 3: Cross multiply
    3,964.60x = 5,946.90 × 3,721.60
  4. Step 4: Simplify right side
    3,964.60x = 22,131,983.04
  5. Step 5: Solve for x
    x = 22,131,983.04/3,964.60
  6. Step 6: Final answer
    x = 5,582.40

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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.