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Finding the Fourth Proportional to 3,946.42, 5,918.01 and 1,479.97

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Solution

The fourth proportional to 3,946.42, 5,918.01 and 1,479.97 is: 2,219.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.42 : 5,918.01 = 1,479.97 : x
  2. Step 2: Convert to fraction form
    3,946.42/5,918.01 = 1,479.97/x
  3. Step 3: Cross multiply
    3,946.42x = 5,918.01 × 1,479.97
  4. Step 4: Simplify right side
    3,946.42x = 8,758,477.26
  5. Step 5: Solve for x
    x = 8,758,477.26/3,946.42
  6. Step 6: Final answer
    x = 2,219.35

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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.