Home / 8,372.21-12,558.31-3,438.38

Finding the Fourth Proportional to 8,372.21, 12,558.31 and 3,438.38

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Solution

The fourth proportional to 8,372.21, 12,558.31 and 3,438.38 is: 5,157.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,372.21 : 12,558.31 = 3,438.38 : x
  2. Step 2: Convert to fraction form
    8,372.21/12,558.31 = 3,438.38/x
  3. Step 3: Cross multiply
    8,372.21x = 12,558.31 × 3,438.38
  4. Step 4: Simplify right side
    8,372.21x = 43,180,264.74
  5. Step 5: Solve for x
    x = 43,180,264.74/8,372.21
  6. Step 6: Final answer
    x = 5,157.57

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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.