Home / 6,131.28-8,461-3,336.72

Finding the Fourth Proportional to 6,131.28, 8,461 and 3,336.72

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Solution

The fourth proportional to 6,131.28, 8,461 and 3,336.72 is: 4,604.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,131.28 : 8,461 = 3,336.72 : x
  2. Step 2: Convert to fraction form
    6,131.28/8,461 = 3,336.72/x
  3. Step 3: Cross multiply
    6,131.28x = 8,461 × 3,336.72
  4. Step 4: Simplify right side
    6,131.28x = 28,231,987.92
  5. Step 5: Solve for x
    x = 28,231,987.92/6,131.28
  6. Step 6: Final answer
    x = 4,604.58

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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.