Home / 4,212.70-6,318.81-1,291.01

Finding the Fourth Proportional to 4,212.70, 6,318.81 and 1,291.01

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Solution

The fourth proportional to 4,212.70, 6,318.81 and 1,291.01 is: 1,936.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.70 : 6,318.81 = 1,291.01 : x
  2. Step 2: Convert to fraction form
    4,212.70/6,318.81 = 1,291.01/x
  3. Step 3: Cross multiply
    4,212.70x = 6,318.81 × 1,291.01
  4. Step 4: Simplify right side
    4,212.70x = 8,157,615.30
  5. Step 5: Solve for x
    x = 8,157,615.30/4,212.70
  6. Step 6: Final answer
    x = 1,936.44

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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.