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Finding the Fourth Proportional to 7,798.60, 11,673.60 and 5,611.60

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Solution

The fourth proportional to 7,798.60, 11,673.60 and 5,611.60 is: 8,399.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,798.60 : 11,673.60 = 5,611.60 : x
  2. Step 2: Convert to fraction form
    7,798.60/11,673.60 = 5,611.60/x
  3. Step 3: Cross multiply
    7,798.60x = 11,673.60 × 5,611.60
  4. Step 4: Simplify right side
    7,798.60x = 65,507,573.76
  5. Step 5: Solve for x
    x = 65,507,573.76/7,798.60
  6. Step 6: Final answer
    x = 8,399.91

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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.