Home / 7,881.22-11,825.58-4,918.86

Finding the Fourth Proportional to 7,881.22, 11,825.58 and 4,918.86

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Solution

The fourth proportional to 7,881.22, 11,825.58 and 4,918.86 is: 7,380.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.22 : 11,825.58 = 4,918.86 : x
  2. Step 2: Convert to fraction form
    7,881.22/11,825.58 = 4,918.86/x
  3. Step 3: Cross multiply
    7,881.22x = 11,825.58 × 4,918.86
  4. Step 4: Simplify right side
    7,881.22x = 58,168,372.44
  5. Step 5: Solve for x
    x = 58,168,372.44/7,881.22
  6. Step 6: Final answer
    x = 7,380.63

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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.