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Finding the Fourth Proportional to 7,788.44, 11,663.58 and 7,039.60

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Solution

The fourth proportional to 7,788.44, 11,663.58 and 7,039.60 is: 10,542.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.44 : 11,663.58 = 7,039.60 : x
  2. Step 2: Convert to fraction form
    7,788.44/11,663.58 = 7,039.60/x
  3. Step 3: Cross multiply
    7,788.44x = 11,663.58 × 7,039.60
  4. Step 4: Simplify right side
    7,788.44x = 82,106,935.01
  5. Step 5: Solve for x
    x = 82,106,935.01/7,788.44
  6. Step 6: Final answer
    x = 10,542.15

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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.