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Finding the Fourth Proportional to 6,138.85, 9,208.84 and 1,977.88

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Solution

The fourth proportional to 6,138.85, 9,208.84 and 1,977.88 is: 2,967.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.85 : 9,208.84 = 1,977.88 : x
  2. Step 2: Convert to fraction form
    6,138.85/9,208.84 = 1,977.88/x
  3. Step 3: Cross multiply
    6,138.85x = 9,208.84 × 1,977.88
  4. Step 4: Simplify right side
    6,138.85x = 18,213,973.47
  5. Step 5: Solve for x
    x = 18,213,973.47/6,138.85
  6. Step 6: Final answer
    x = 2,967.00

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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.