Home / 7,821.36-11,725.58-3,659.32

Finding the Fourth Proportional to 7,821.36, 11,725.58 and 3,659.32

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Solution

The fourth proportional to 7,821.36, 11,725.58 and 3,659.32 is: 5,485.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.36 : 11,725.58 = 3,659.32 : x
  2. Step 2: Convert to fraction form
    7,821.36/11,725.58 = 3,659.32/x
  3. Step 3: Cross multiply
    7,821.36x = 11,725.58 × 3,659.32
  4. Step 4: Simplify right side
    7,821.36x = 42,907,649.41
  5. Step 5: Solve for x
    x = 42,907,649.41/7,821.36
  6. Step 6: Final answer
    x = 5,485.96

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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.