Home / 8,103.90-12,154.81-2,181.23

Finding the Fourth Proportional to 8,103.90, 12,154.81 and 2,181.23

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Solution

The fourth proportional to 8,103.90, 12,154.81 and 2,181.23 is: 3,271.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.90 : 12,154.81 = 2,181.23 : x
  2. Step 2: Convert to fraction form
    8,103.90/12,154.81 = 2,181.23/x
  3. Step 3: Cross multiply
    8,103.90x = 12,154.81 × 2,181.23
  4. Step 4: Simplify right side
    8,103.90x = 26,512,419.66
  5. Step 5: Solve for x
    x = 26,512,419.66/8,103.90
  6. Step 6: Final answer
    x = 3,271.56

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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.