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Finding the Fourth Proportional to 7,951.80, 11,927.70 and 4,055.70

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Solution

The fourth proportional to 7,951.80, 11,927.70 and 4,055.70 is: 6,083.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,951.80 : 11,927.70 = 4,055.70 : x
  2. Step 2: Convert to fraction form
    7,951.80/11,927.70 = 4,055.70/x
  3. Step 3: Cross multiply
    7,951.80x = 11,927.70 × 4,055.70
  4. Step 4: Simplify right side
    7,951.80x = 48,375,172.89
  5. Step 5: Solve for x
    x = 48,375,172.89/7,951.80
  6. Step 6: Final answer
    x = 6,083.55

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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.