Home / 8,438.95-12,655.99-2,515.60

Finding the Fourth Proportional to 8,438.95, 12,655.99 and 2,515.60

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Solution

The fourth proportional to 8,438.95, 12,655.99 and 2,515.60 is: 3,772.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.95 : 12,655.99 = 2,515.60 : x
  2. Step 2: Convert to fraction form
    8,438.95/12,655.99 = 2,515.60/x
  3. Step 3: Cross multiply
    8,438.95x = 12,655.99 × 2,515.60
  4. Step 4: Simplify right side
    8,438.95x = 31,837,408.44
  5. Step 5: Solve for x
    x = 31,837,408.44/8,438.95
  6. Step 6: Final answer
    x = 3,772.67

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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.