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Finding the Fourth Proportional to 4,829.28, 7,236.36 and 3,855.12

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Solution

The fourth proportional to 4,829.28, 7,236.36 and 3,855.12 is: 5,776.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,829.28 : 7,236.36 = 3,855.12 : x
  2. Step 2: Convert to fraction form
    4,829.28/7,236.36 = 3,855.12/x
  3. Step 3: Cross multiply
    4,829.28x = 7,236.36 × 3,855.12
  4. Step 4: Simplify right side
    4,829.28x = 27,897,036.16
  5. Step 5: Solve for x
    x = 27,897,036.16/4,829.28
  6. Step 6: Final answer
    x = 5,776.64

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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.