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Finding the Fourth Proportional to 5,268.76, 7,855.12 and 5,134.12

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Solution

The fourth proportional to 5,268.76, 7,855.12 and 5,134.12 is: 7,654.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,268.76 : 7,855.12 = 5,134.12 : x
  2. Step 2: Convert to fraction form
    5,268.76/7,855.12 = 5,134.12/x
  3. Step 3: Cross multiply
    5,268.76x = 7,855.12 × 5,134.12
  4. Step 4: Simplify right side
    5,268.76x = 40,329,128.69
  5. Step 5: Solve for x
    x = 40,329,128.69/5,268.76
  6. Step 6: Final answer
    x = 7,654.39

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.