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Finding the Fourth Proportional to 7,908.89, 11,863.45 and 2,065.50

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Solution

The fourth proportional to 7,908.89, 11,863.45 and 2,065.50 is: 3,098.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.89 : 11,863.45 = 2,065.50 : x
  2. Step 2: Convert to fraction form
    7,908.89/11,863.45 = 2,065.50/x
  3. Step 3: Cross multiply
    7,908.89x = 11,863.45 × 2,065.50
  4. Step 4: Simplify right side
    7,908.89x = 24,503,955.65
  5. Step 5: Solve for x
    x = 24,503,955.65/7,908.89
  6. Step 6: Final answer
    x = 3,098.28

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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.