Home / 4,212.71-6,318.91-1,290.94

Finding the Fourth Proportional to 4,212.71, 6,318.91 and 1,290.94

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Solution

The fourth proportional to 4,212.71, 6,318.91 and 1,290.94 is: 1,936.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.71 : 6,318.91 = 1,290.94 : x
  2. Step 2: Convert to fraction form
    4,212.71/6,318.91 = 1,290.94/x
  3. Step 3: Cross multiply
    4,212.71x = 6,318.91 × 1,290.94
  4. Step 4: Simplify right side
    4,212.71x = 8,157,319.49
  5. Step 5: Solve for x
    x = 8,157,319.49/4,212.71
  6. Step 6: Final answer
    x = 1,936.36

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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.