Home / 8,078.20-12,101.10-4,611.40

Finding the Fourth Proportional to 8,078.20, 12,101.10 and 4,611.40

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Solution

The fourth proportional to 8,078.20, 12,101.10 and 4,611.40 is: 6,907.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.20 : 12,101.10 = 4,611.40 : x
  2. Step 2: Convert to fraction form
    8,078.20/12,101.10 = 4,611.40/x
  3. Step 3: Cross multiply
    8,078.20x = 12,101.10 × 4,611.40
  4. Step 4: Simplify right side
    8,078.20x = 55,803,012.54
  5. Step 5: Solve for x
    x = 55,803,012.54/8,078.20
  6. Step 6: Final answer
    x = 6,907.85

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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.