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Finding the Fourth Proportional to 3,285.46, 4,928.07 and 976.90

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Solution

The fourth proportional to 3,285.46, 4,928.07 and 976.90 is: 1,465.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.46 : 4,928.07 = 976.90 : x
  2. Step 2: Convert to fraction form
    3,285.46/4,928.07 = 976.90/x
  3. Step 3: Cross multiply
    3,285.46x = 4,928.07 × 976.90
  4. Step 4: Simplify right side
    3,285.46x = 4,814,231.58
  5. Step 5: Solve for x
    x = 4,814,231.58/3,285.46
  6. Step 6: Final answer
    x = 1,465.31

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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.