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Finding the Fourth Proportional to 3,480.56, 4,803.20 and 1,908.80

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Solution

The fourth proportional to 3,480.56, 4,803.20 and 1,908.80 is: 2,634.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.56 : 4,803.20 = 1,908.80 : x
  2. Step 2: Convert to fraction form
    3,480.56/4,803.20 = 1,908.80/x
  3. Step 3: Cross multiply
    3,480.56x = 4,803.20 × 1,908.80
  4. Step 4: Simplify right side
    3,480.56x = 9,168,348.16
  5. Step 5: Solve for x
    x = 9,168,348.16/3,480.56
  6. Step 6: Final answer
    x = 2,634.16

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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.