Home / 8,551.27-12,808.90-4,378.60

Finding the Fourth Proportional to 8,551.27, 12,808.90 and 4,378.60

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Solution

The fourth proportional to 8,551.27, 12,808.90 and 4,378.60 is: 6,558.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,551.27 : 12,808.90 = 4,378.60 : x
  2. Step 2: Convert to fraction form
    8,551.27/12,808.90 = 4,378.60/x
  3. Step 3: Cross multiply
    8,551.27x = 12,808.90 × 4,378.60
  4. Step 4: Simplify right side
    8,551.27x = 56,085,049.54
  5. Step 5: Solve for x
    x = 56,085,049.54/8,551.27
  6. Step 6: Final answer
    x = 6,558.68

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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.