Home / 8,420.30-11,620.44-4,883.56

Finding the Fourth Proportional to 8,420.30, 11,620.44 and 4,883.56

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Solution

The fourth proportional to 8,420.30, 11,620.44 and 4,883.56 is: 6,739.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.30 : 11,620.44 = 4,883.56 : x
  2. Step 2: Convert to fraction form
    8,420.30/11,620.44 = 4,883.56/x
  3. Step 3: Cross multiply
    8,420.30x = 11,620.44 × 4,883.56
  4. Step 4: Simplify right side
    8,420.30x = 56,749,115.97
  5. Step 5: Solve for x
    x = 56,749,115.97/8,420.30
  6. Step 6: Final answer
    x = 6,739.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.