Home / 4,212.07-6,318.81-1,289.69

Finding the Fourth Proportional to 4,212.07, 6,318.81 and 1,289.69

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Solution

The fourth proportional to 4,212.07, 6,318.81 and 1,289.69 is: 1,934.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.07 : 6,318.81 = 1,289.69 : x
  2. Step 2: Convert to fraction form
    4,212.07/6,318.81 = 1,289.69/x
  3. Step 3: Cross multiply
    4,212.07x = 6,318.81 × 1,289.69
  4. Step 4: Simplify right side
    4,212.07x = 8,149,306.07
  5. Step 5: Solve for x
    x = 8,149,306.07/4,212.07
  6. Step 6: Final answer
    x = 1,934.75

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1.5x scale

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.