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Finding the Fourth Proportional to 7,955.01, 11,914.05 and 7,678.22

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Solution

The fourth proportional to 7,955.01, 11,914.05 and 7,678.22 is: 11,499.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.01 : 11,914.05 = 7,678.22 : x
  2. Step 2: Convert to fraction form
    7,955.01/11,914.05 = 7,678.22/x
  3. Step 3: Cross multiply
    7,955.01x = 11,914.05 × 7,678.22
  4. Step 4: Simplify right side
    7,955.01x = 91,478,696.99
  5. Step 5: Solve for x
    x = 91,478,696.99/7,955.01
  6. Step 6: Final answer
    x = 11,499.51

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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.