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Finding the Fourth Proportional to 4,983.26, 7,474.78 and 1,285.45

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Solution

The fourth proportional to 4,983.26, 7,474.78 and 1,285.45 is: 1,928.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,983.26 : 7,474.78 = 1,285.45 : x
  2. Step 2: Convert to fraction form
    4,983.26/7,474.78 = 1,285.45/x
  3. Step 3: Cross multiply
    4,983.26x = 7,474.78 × 1,285.45
  4. Step 4: Simplify right side
    4,983.26x = 9,608,455.95
  5. Step 5: Solve for x
    x = 9,608,455.95/4,983.26
  6. Step 6: Final answer
    x = 1,928.15

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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.