Home / 8,611.08-12,918.78-2,768.28

Finding the Fourth Proportional to 8,611.08, 12,918.78 and 2,768.28

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Solution

The fourth proportional to 8,611.08, 12,918.78 and 2,768.28 is: 4,153.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.08 : 12,918.78 = 2,768.28 : x
  2. Step 2: Convert to fraction form
    8,611.08/12,918.78 = 2,768.28/x
  3. Step 3: Cross multiply
    8,611.08x = 12,918.78 × 2,768.28
  4. Step 4: Simplify right side
    8,611.08x = 35,762,800.30
  5. Step 5: Solve for x
    x = 35,762,800.30/8,611.08
  6. Step 6: Final answer
    x = 4,153.11

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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.