Home / 3,520.12-5,280.06-1,211.56

Finding the Fourth Proportional to 3,520.12, 5,280.06 and 1,211.56

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Solution

The fourth proportional to 3,520.12, 5,280.06 and 1,211.56 is: 1,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.12 : 5,280.06 = 1,211.56 : x
  2. Step 2: Convert to fraction form
    3,520.12/5,280.06 = 1,211.56/x
  3. Step 3: Cross multiply
    3,520.12x = 5,280.06 × 1,211.56
  4. Step 4: Simplify right side
    3,520.12x = 6,397,109.49
  5. Step 5: Solve for x
    x = 6,397,109.49/3,520.12
  6. Step 6: Final answer
    x = 1,817.30

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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.