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Finding the Fourth Proportional to 6,650.94, 9,978.24 and 1,971.18

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Solution

The fourth proportional to 6,650.94, 9,978.24 and 1,971.18 is: 2,957.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,650.94 : 9,978.24 = 1,971.18 : x
  2. Step 2: Convert to fraction form
    6,650.94/9,978.24 = 1,971.18/x
  3. Step 3: Cross multiply
    6,650.94x = 9,978.24 × 1,971.18
  4. Step 4: Simplify right side
    6,650.94x = 19,668,907.12
  5. Step 5: Solve for x
    x = 19,668,907.12/6,650.94
  6. Step 6: Final answer
    x = 2,957.31

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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.