Home / 4,257.21-6,383.60-1,915.19

Finding the Fourth Proportional to 4,257.21, 6,383.60 and 1,915.19

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Solution

The fourth proportional to 4,257.21, 6,383.60 and 1,915.19 is: 2,871.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,257.21 : 6,383.60 = 1,915.19 : x
  2. Step 2: Convert to fraction form
    4,257.21/6,383.60 = 1,915.19/x
  3. Step 3: Cross multiply
    4,257.21x = 6,383.60 × 1,915.19
  4. Step 4: Simplify right side
    4,257.21x = 12,225,806.88
  5. Step 5: Solve for x
    x = 12,225,806.88/4,257.21
  6. Step 6: Final answer
    x = 2,871.79

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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.