Home / 4,212.32-6,319.40-1,290.85

Finding the Fourth Proportional to 4,212.32, 6,319.40 and 1,290.85

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Solution

The fourth proportional to 4,212.32, 6,319.40 and 1,290.85 is: 1,936.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.32 : 6,319.40 = 1,290.85 : x
  2. Step 2: Convert to fraction form
    4,212.32/6,319.40 = 1,290.85/x
  3. Step 3: Cross multiply
    4,212.32x = 6,319.40 × 1,290.85
  4. Step 4: Simplify right side
    4,212.32x = 8,157,375.24
  5. Step 5: Solve for x
    x = 8,157,375.24/4,212.32
  6. Step 6: Final answer
    x = 1,936.55

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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.