Home / 2,958.46-4,056.20-2,905.78

Finding the Fourth Proportional to 2,958.46, 4,056.20 and 2,905.78

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Solution

The fourth proportional to 2,958.46, 4,056.20 and 2,905.78 is: 3,983.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,958.46 : 4,056.20 = 2,905.78 : x
  2. Step 2: Convert to fraction form
    2,958.46/4,056.20 = 2,905.78/x
  3. Step 3: Cross multiply
    2,958.46x = 4,056.20 × 2,905.78
  4. Step 4: Simplify right side
    2,958.46x = 11,786,424.84
  5. Step 5: Solve for x
    x = 11,786,424.84/2,958.46
  6. Step 6: Final answer
    x = 3,983.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.