Home / 8,511.40-12,768.12-3,580.36

Finding the Fourth Proportional to 8,511.40, 12,768.12 and 3,580.36

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Solution

The fourth proportional to 8,511.40, 12,768.12 and 3,580.36 is: 5,370.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511.40 : 12,768.12 = 3,580.36 : x
  2. Step 2: Convert to fraction form
    8,511.40/12,768.12 = 3,580.36/x
  3. Step 3: Cross multiply
    8,511.40x = 12,768.12 × 3,580.36
  4. Step 4: Simplify right side
    8,511.40x = 45,714,466.12
  5. Step 5: Solve for x
    x = 45,714,466.12/8,511.40
  6. Step 6: Final answer
    x = 5,370.97

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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.