Home / 6,942.12-10,400.10-3,428.01

Finding the Fourth Proportional to 6,942.12, 10,400.10 and 3,428.01

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Solution

The fourth proportional to 6,942.12, 10,400.10 and 3,428.01 is: 5,135.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,942.12 : 10,400.10 = 3,428.01 : x
  2. Step 2: Convert to fraction form
    6,942.12/10,400.10 = 3,428.01/x
  3. Step 3: Cross multiply
    6,942.12x = 10,400.10 × 3,428.01
  4. Step 4: Simplify right side
    6,942.12x = 35,651,619.32
  5. Step 5: Solve for x
    x = 35,651,619.32/6,942.12
  6. Step 6: Final answer
    x = 5,135.56

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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.