Home / 6,942.81-9,579.60-3,958.05

Finding the Fourth Proportional to 6,942.81, 9,579.60 and 3,958.05

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Solution

The fourth proportional to 6,942.81, 9,579.60 and 3,958.05 is: 5,461.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,942.81 : 9,579.60 = 3,958.05 : x
  2. Step 2: Convert to fraction form
    6,942.81/9,579.60 = 3,958.05/x
  3. Step 3: Cross multiply
    6,942.81x = 9,579.60 × 3,958.05
  4. Step 4: Simplify right side
    6,942.81x = 37,916,535.78
  5. Step 5: Solve for x
    x = 37,916,535.78/6,942.81
  6. Step 6: Final answer
    x = 5,461.27

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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.