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Finding the Fourth Proportional to 3,410.47, 4,706.41 and 1,918.39

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Solution

The fourth proportional to 3,410.47, 4,706.41 and 1,918.39 is: 2,647.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,410.47 : 4,706.41 = 1,918.39 : x
  2. Step 2: Convert to fraction form
    3,410.47/4,706.41 = 1,918.39/x
  3. Step 3: Cross multiply
    3,410.47x = 4,706.41 × 1,918.39
  4. Step 4: Simplify right side
    3,410.47x = 9,028,729.17
  5. Step 5: Solve for x
    x = 9,028,729.17/3,410.47
  6. Step 6: Final answer
    x = 2,647.35

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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.