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Finding the Fourth Proportional to 27,980.88, 41,975.88 and 8,261.43

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Solution

The fourth proportional to 27,980.88, 41,975.88 and 8,261.43 is: 12,393.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,980.88 : 41,975.88 = 8,261.43 : x
  2. Step 2: Convert to fraction form
    27,980.88/41,975.88 = 8,261.43/x
  3. Step 3: Cross multiply
    27,980.88x = 41,975.88 × 8,261.43
  4. Step 4: Simplify right side
    27,980.88x = 346,780,888.50
  5. Step 5: Solve for x
    x = 346,780,888.50/27,980.88
  6. Step 6: Final answer
    x = 12,393.49

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1.5x scale

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.