Home / 7,830.22-11,741.86-5,629.75

Finding the Fourth Proportional to 7,830.22, 11,741.86 and 5,629.75

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Solution

The fourth proportional to 7,830.22, 11,741.86 and 5,629.75 is: 8,442.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,830.22 : 11,741.86 = 5,629.75 : x
  2. Step 2: Convert to fraction form
    7,830.22/11,741.86 = 5,629.75/x
  3. Step 3: Cross multiply
    7,830.22x = 11,741.86 × 5,629.75
  4. Step 4: Simplify right side
    7,830.22x = 66,103,736.34
  5. Step 5: Solve for x
    x = 66,103,736.34/7,830.22
  6. Step 6: Final answer
    x = 8,442.13

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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.