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Finding the Fourth Proportional to 3,558.60, 4,922.10 and 3,144.60

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Solution

The fourth proportional to 3,558.60, 4,922.10 and 3,144.60 is: 4,349.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.60 : 4,922.10 = 3,144.60 : x
  2. Step 2: Convert to fraction form
    3,558.60/4,922.10 = 3,144.60/x
  3. Step 3: Cross multiply
    3,558.60x = 4,922.10 × 3,144.60
  4. Step 4: Simplify right side
    3,558.60x = 15,478,035.66
  5. Step 5: Solve for x
    x = 15,478,035.66/3,558.60
  6. Step 6: Final answer
    x = 4,349.47

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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.