Home / 8,154.21-12,227.36-3,989.34

Finding the Fourth Proportional to 8,154.21, 12,227.36 and 3,989.34

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Solution

The fourth proportional to 8,154.21, 12,227.36 and 3,989.34 is: 5,982.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,154.21 : 12,227.36 = 3,989.34 : x
  2. Step 2: Convert to fraction form
    8,154.21/12,227.36 = 3,989.34/x
  3. Step 3: Cross multiply
    8,154.21x = 12,227.36 × 3,989.34
  4. Step 4: Simplify right side
    8,154.21x = 48,779,076.40
  5. Step 5: Solve for x
    x = 48,779,076.40/8,154.21
  6. Step 6: Final answer
    x = 5,982.07

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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.