Home / 4,485.20-6,215.80-4,422.56

Finding the Fourth Proportional to 4,485.20, 6,215.80 and 4,422.56

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Solution

The fourth proportional to 4,485.20, 6,215.80 and 4,422.56 is: 6,128.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,485.20 : 6,215.80 = 4,422.56 : x
  2. Step 2: Convert to fraction form
    4,485.20/6,215.80 = 4,422.56/x
  3. Step 3: Cross multiply
    4,485.20x = 6,215.80 × 4,422.56
  4. Step 4: Simplify right side
    4,485.20x = 27,489,748.45
  5. Step 5: Solve for x
    x = 27,489,748.45/4,485.20
  6. Step 6: Final answer
    x = 6,128.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.