Home / 8,438.40-12,634.56-4,325.76

Finding the Fourth Proportional to 8,438.40, 12,634.56 and 4,325.76

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Solution

The fourth proportional to 8,438.40, 12,634.56 and 4,325.76 is: 6,476.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.40 : 12,634.56 = 4,325.76 : x
  2. Step 2: Convert to fraction form
    8,438.40/12,634.56 = 4,325.76/x
  3. Step 3: Cross multiply
    8,438.40x = 12,634.56 × 4,325.76
  4. Step 4: Simplify right side
    8,438.40x = 54,654,074.27
  5. Step 5: Solve for x
    x = 54,654,074.27/8,438.40
  6. Step 6: Final answer
    x = 6,476.83

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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.