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Finding the Fourth Proportional to 2,725.40, 4,085.64 and 993.62

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Solution

The fourth proportional to 2,725.40, 4,085.64 and 993.62 is: 1,489.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,725.40 : 4,085.64 = 993.62 : x
  2. Step 2: Convert to fraction form
    2,725.40/4,085.64 = 993.62/x
  3. Step 3: Cross multiply
    2,725.40x = 4,085.64 × 993.62
  4. Step 4: Simplify right side
    2,725.40x = 4,059,583.83
  5. Step 5: Solve for x
    x = 4,059,583.83/2,725.40
  6. Step 6: Final answer
    x = 1,489.54

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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.