Home / 3,680.96-5,076.32-3,120.80

Finding the Fourth Proportional to 3,680.96, 5,076.32 and 3,120.80

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Solution

The fourth proportional to 3,680.96, 5,076.32 and 3,120.80 is: 4,303.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.96 : 5,076.32 = 3,120.80 : x
  2. Step 2: Convert to fraction form
    3,680.96/5,076.32 = 3,120.80/x
  3. Step 3: Cross multiply
    3,680.96x = 5,076.32 × 3,120.80
  4. Step 4: Simplify right side
    3,680.96x = 15,842,179.46
  5. Step 5: Solve for x
    x = 15,842,179.46/3,680.96
  6. Step 6: Final answer
    x = 4,303.82

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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.