Home / 6,936.60-10,405.80-3,428.40

Finding the Fourth Proportional to 6,936.60, 10,405.80 and 3,428.40

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Solution

The fourth proportional to 6,936.60, 10,405.80 and 3,428.40 is: 5,143.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,936.60 : 10,405.80 = 3,428.40 : x
  2. Step 2: Convert to fraction form
    6,936.60/10,405.80 = 3,428.40/x
  3. Step 3: Cross multiply
    6,936.60x = 10,405.80 × 3,428.40
  4. Step 4: Simplify right side
    6,936.60x = 35,675,244.72
  5. Step 5: Solve for x
    x = 35,675,244.72/6,936.60
  6. Step 6: Final answer
    x = 5,143.04

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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.