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Finding the Fourth Proportional to 7,999.60, 11,940.14 and 7,507.12

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Solution

The fourth proportional to 7,999.60, 11,940.14 and 7,507.12 is: 11,205.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.60 : 11,940.14 = 7,507.12 : x
  2. Step 2: Convert to fraction form
    7,999.60/11,940.14 = 7,507.12/x
  3. Step 3: Cross multiply
    7,999.60x = 11,940.14 × 7,507.12
  4. Step 4: Simplify right side
    7,999.60x = 89,636,063.80
  5. Step 5: Solve for x
    x = 89,636,063.80/7,999.60
  6. Step 6: Final answer
    x = 11,205.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.