Home / 3,669.90-5,505.81-1,205.10

Finding the Fourth Proportional to 3,669.90, 5,505.81 and 1,205.10

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Solution

The fourth proportional to 3,669.90, 5,505.81 and 1,205.10 is: 1,807.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669.90 : 5,505.81 = 1,205.10 : x
  2. Step 2: Convert to fraction form
    3,669.90/5,505.81 = 1,205.10/x
  3. Step 3: Cross multiply
    3,669.90x = 5,505.81 × 1,205.10
  4. Step 4: Simplify right side
    3,669.90x = 6,635,051.63
  5. Step 5: Solve for x
    x = 6,635,051.63/3,669.90
  6. Step 6: Final answer
    x = 1,807.97

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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.