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Finding the Fourth Proportional to 5,638.78, 8,458.41 and 1,941.01

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Solution

The fourth proportional to 5,638.78, 8,458.41 and 1,941.01 is: 2,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.78 : 8,458.41 = 1,941.01 : x
  2. Step 2: Convert to fraction form
    5,638.78/8,458.41 = 1,941.01/x
  3. Step 3: Cross multiply
    5,638.78x = 8,458.41 × 1,941.01
  4. Step 4: Simplify right side
    5,638.78x = 16,417,858.39
  5. Step 5: Solve for x
    x = 16,417,858.39/5,638.78
  6. Step 6: Final answer
    x = 2,911.60

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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.