Home / 4,211.88-6,317.82-1,290.15

Finding the Fourth Proportional to 4,211.88, 6,317.82 and 1,290.15

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Solution

The fourth proportional to 4,211.88, 6,317.82 and 1,290.15 is: 1,935.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,211.88 : 6,317.82 = 1,290.15 : x
  2. Step 2: Convert to fraction form
    4,211.88/6,317.82 = 1,290.15/x
  3. Step 3: Cross multiply
    4,211.88x = 6,317.82 × 1,290.15
  4. Step 4: Simplify right side
    4,211.88x = 8,150,935.47
  5. Step 5: Solve for x
    x = 8,150,935.47/4,211.88
  6. Step 6: Final answer
    x = 1,935.23

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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.