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Finding the Fourth Proportional to 3,321.76, 4,558.76 and 3,056.80

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Solution

The fourth proportional to 3,321.76, 4,558.76 and 3,056.80 is: 4,195.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.76 : 4,558.76 = 3,056.80 : x
  2. Step 2: Convert to fraction form
    3,321.76/4,558.76 = 3,056.80/x
  3. Step 3: Cross multiply
    3,321.76x = 4,558.76 × 3,056.80
  4. Step 4: Simplify right side
    3,321.76x = 13,935,217.57
  5. Step 5: Solve for x
    x = 13,935,217.57/3,321.76
  6. Step 6: Final answer
    x = 4,195.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.