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Finding the Fourth Proportional to 2,405.40, 3,608.10 and 1,627.80

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Solution

The fourth proportional to 2,405.40, 3,608.10 and 1,627.80 is: 2,441.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.40 : 3,608.10 = 1,627.80 : x
  2. Step 2: Convert to fraction form
    2,405.40/3,608.10 = 1,627.80/x
  3. Step 3: Cross multiply
    2,405.40x = 3,608.10 × 1,627.80
  4. Step 4: Simplify right side
    2,405.40x = 5,873,265.18
  5. Step 5: Solve for x
    x = 5,873,265.18/2,405.40
  6. Step 6: Final answer
    x = 2,441.70

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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.