Home / 7,107.20-10,660.70-3,211.60

Finding the Fourth Proportional to 7,107.20, 10,660.70 and 3,211.60

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Solution

The fourth proportional to 7,107.20, 10,660.70 and 3,211.60 is: 4,817.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.20 : 10,660.70 = 3,211.60 : x
  2. Step 2: Convert to fraction form
    7,107.20/10,660.70 = 3,211.60/x
  3. Step 3: Cross multiply
    7,107.20x = 10,660.70 × 3,211.60
  4. Step 4: Simplify right side
    7,107.20x = 34,237,904.12
  5. Step 5: Solve for x
    x = 34,237,904.12/7,107.20
  6. Step 6: Final answer
    x = 4,817.35

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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.