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Finding the Fourth Proportional to 2,160.45, 3,234.60 and 2,160.45

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Solution

The fourth proportional to 2,160.45, 3,234.60 and 2,160.45 is: 3,234.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.45 : 3,234.60 = 2,160.45 : x
  2. Step 2: Convert to fraction form
    2,160.45/3,234.60 = 2,160.45/x
  3. Step 3: Cross multiply
    2,160.45x = 3,234.60 × 2,160.45
  4. Step 4: Simplify right side
    2,160.45x = 6,988,191.57
  5. Step 5: Solve for x
    x = 6,988,191.57/2,160.45
  6. Step 6: Final answer
    x = 3,234.60

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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.