Home / 3,670.30-5,505.40-1,205.20

Finding the Fourth Proportional to 3,670.30, 5,505.40 and 1,205.20

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Solution

The fourth proportional to 3,670.30, 5,505.40 and 1,205.20 is: 1,807.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,670.30 : 5,505.40 = 1,205.20 : x
  2. Step 2: Convert to fraction form
    3,670.30/5,505.40 = 1,205.20/x
  3. Step 3: Cross multiply
    3,670.30x = 5,505.40 × 1,205.20
  4. Step 4: Simplify right side
    3,670.30x = 6,635,108.08
  5. Step 5: Solve for x
    x = 6,635,108.08/3,670.30
  6. Step 6: Final answer
    x = 1,807.78

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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.