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Finding the Fourth Proportional to 3,392.75, 4,682.51 and 1,976.67

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Solution

The fourth proportional to 3,392.75, 4,682.51 and 1,976.67 is: 2,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.75 : 4,682.51 = 1,976.67 : x
  2. Step 2: Convert to fraction form
    3,392.75/4,682.51 = 1,976.67/x
  3. Step 3: Cross multiply
    3,392.75x = 4,682.51 × 1,976.67
  4. Step 4: Simplify right side
    3,392.75x = 9,255,774.57
  5. Step 5: Solve for x
    x = 9,255,774.57/3,392.75
  6. Step 6: Final answer
    x = 2,728.10

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Double scale
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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.