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Finding the Fourth Proportional to 3,505.80, 4,837.80 and 2,179.62

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Solution

The fourth proportional to 3,505.80, 4,837.80 and 2,179.62 is: 3,007.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,505.80 : 4,837.80 = 2,179.62 : x
  2. Step 2: Convert to fraction form
    3,505.80/4,837.80 = 2,179.62/x
  3. Step 3: Cross multiply
    3,505.80x = 4,837.80 × 2,179.62
  4. Step 4: Simplify right side
    3,505.80x = 10,544,565.64
  5. Step 5: Solve for x
    x = 10,544,565.64/3,505.80
  6. Step 6: Final answer
    x = 3,007.75

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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.