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Finding the Fourth Proportional to 1,738.80, 2,404.08 and 1,641.60

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Solution

The fourth proportional to 1,738.80, 2,404.08 and 1,641.60 is: 2,269.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738.80 : 2,404.08 = 1,641.60 : x
  2. Step 2: Convert to fraction form
    1,738.80/2,404.08 = 1,641.60/x
  3. Step 3: Cross multiply
    1,738.80x = 2,404.08 × 1,641.60
  4. Step 4: Simplify right side
    1,738.80x = 3,946,537.73
  5. Step 5: Solve for x
    x = 3,946,537.73/1,738.80
  6. Step 6: Final answer
    x = 2,269.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.