Home / 8,511.20-12,766.80-6,437.60

Finding the Fourth Proportional to 8,511.20, 12,766.80 and 6,437.60

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Solution

The fourth proportional to 8,511.20, 12,766.80 and 6,437.60 is: 9,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511.20 : 12,766.80 = 6,437.60 : x
  2. Step 2: Convert to fraction form
    8,511.20/12,766.80 = 6,437.60/x
  3. Step 3: Cross multiply
    8,511.20x = 12,766.80 × 6,437.60
  4. Step 4: Simplify right side
    8,511.20x = 82,187,551.68
  5. Step 5: Solve for x
    x = 82,187,551.68/8,511.20
  6. Step 6: Final answer
    x = 9,656.40

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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.