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Finding the Fourth Proportional to 7,905.99, 11,770.87 and 7,795.61

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Solution

The fourth proportional to 7,905.99, 11,770.87 and 7,795.61 is: 11,606.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.99 : 11,770.87 = 7,795.61 : x
  2. Step 2: Convert to fraction form
    7,905.99/11,770.87 = 7,795.61/x
  3. Step 3: Cross multiply
    7,905.99x = 11,770.87 × 7,795.61
  4. Step 4: Simplify right side
    7,905.99x = 91,761,111.88
  5. Step 5: Solve for x
    x = 91,761,111.88/7,905.99
  6. Step 6: Final answer
    x = 11,606.53

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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.