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Finding the Fourth Proportional to 7,951.88, 11,927.76 and 2,108.36

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Solution

The fourth proportional to 7,951.88, 11,927.76 and 2,108.36 is: 3,162.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,951.88 : 11,927.76 = 2,108.36 : x
  2. Step 2: Convert to fraction form
    7,951.88/11,927.76 = 2,108.36/x
  3. Step 3: Cross multiply
    7,951.88x = 11,927.76 × 2,108.36
  4. Step 4: Simplify right side
    7,951.88x = 25,148,012.07
  5. Step 5: Solve for x
    x = 25,148,012.07/7,951.88
  6. Step 6: Final answer
    x = 3,162.52

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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.