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Finding the Fourth Proportional to 3,480.92, 4,803.74 and 1,909.02

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Solution

The fourth proportional to 3,480.92, 4,803.74 and 1,909.02 is: 2,634.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.92 : 4,803.74 = 1,909.02 : x
  2. Step 2: Convert to fraction form
    3,480.92/4,803.74 = 1,909.02/x
  3. Step 3: Cross multiply
    3,480.92x = 4,803.74 × 1,909.02
  4. Step 4: Simplify right side
    3,480.92x = 9,170,435.73
  5. Step 5: Solve for x
    x = 9,170,435.73/3,480.92
  6. Step 6: Final answer
    x = 2,634.49

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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.