Home / 4,212.84-6,318.99-1,290.63

Finding the Fourth Proportional to 4,212.84, 6,318.99 and 1,290.63

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Solution

The fourth proportional to 4,212.84, 6,318.99 and 1,290.63 is: 1,935.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.84 : 6,318.99 = 1,290.63 : x
  2. Step 2: Convert to fraction form
    4,212.84/6,318.99 = 1,290.63/x
  3. Step 3: Cross multiply
    4,212.84x = 6,318.99 × 1,290.63
  4. Step 4: Simplify right side
    4,212.84x = 8,155,478.06
  5. Step 5: Solve for x
    x = 8,155,478.06/4,212.84
  6. Step 6: Final answer
    x = 1,935.86

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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.