Home / 7,114.28-10,676.86-3,221.40

Finding the Fourth Proportional to 7,114.28, 10,676.86 and 3,221.40

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Solution

The fourth proportional to 7,114.28, 10,676.86 and 3,221.40 is: 4,834.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,114.28 : 10,676.86 = 3,221.40 : x
  2. Step 2: Convert to fraction form
    7,114.28/10,676.86 = 3,221.40/x
  3. Step 3: Cross multiply
    7,114.28x = 10,676.86 × 3,221.40
  4. Step 4: Simplify right side
    7,114.28x = 34,394,436.80
  5. Step 5: Solve for x
    x = 34,394,436.80/7,114.28
  6. Step 6: Final answer
    x = 4,834.56

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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.