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Finding the Fourth Proportional to 4,806.53, 6,629.20 and 3,128.48

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Solution

The fourth proportional to 4,806.53, 6,629.20 and 3,128.48 is: 4,314.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,806.53 : 6,629.20 = 3,128.48 : x
  2. Step 2: Convert to fraction form
    4,806.53/6,629.20 = 3,128.48/x
  3. Step 3: Cross multiply
    4,806.53x = 6,629.20 × 3,128.48
  4. Step 4: Simplify right side
    4,806.53x = 20,739,319.62
  5. Step 5: Solve for x
    x = 20,739,319.62/4,806.53
  6. Step 6: Final answer
    x = 4,314.82

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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.