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Finding the Fourth Proportional to 7,989.70, 11,980.46 and 4,295.04

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Solution

The fourth proportional to 7,989.70, 11,980.46 and 4,295.04 is: 6,440.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.70 : 11,980.46 = 4,295.04 : x
  2. Step 2: Convert to fraction form
    7,989.70/11,980.46 = 4,295.04/x
  3. Step 3: Cross multiply
    7,989.70x = 11,980.46 × 4,295.04
  4. Step 4: Simplify right side
    7,989.70x = 51,456,554.92
  5. Step 5: Solve for x
    x = 51,456,554.92/7,989.70
  6. Step 6: Final answer
    x = 6,440.36

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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.