Home / 6,416.20-9,614.58-3,128.41

Finding the Fourth Proportional to 6,416.20, 9,614.58 and 3,128.41

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Solution

The fourth proportional to 6,416.20, 9,614.58 and 3,128.41 is: 4,687.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,416.20 : 9,614.58 = 3,128.41 : x
  2. Step 2: Convert to fraction form
    6,416.20/9,614.58 = 3,128.41/x
  3. Step 3: Cross multiply
    6,416.20x = 9,614.58 × 3,128.41
  4. Step 4: Simplify right side
    6,416.20x = 30,078,348.22
  5. Step 5: Solve for x
    x = 30,078,348.22/6,416.20
  6. Step 6: Final answer
    x = 4,687.88

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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.