Home / 3,670.64-5,505.75-1,205.40

Finding the Fourth Proportional to 3,670.64, 5,505.75 and 1,205.40

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Solution

The fourth proportional to 3,670.64, 5,505.75 and 1,205.40 is: 1,808.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,670.64 : 5,505.75 = 1,205.40 : x
  2. Step 2: Convert to fraction form
    3,670.64/5,505.75 = 1,205.40/x
  3. Step 3: Cross multiply
    3,670.64x = 5,505.75 × 1,205.40
  4. Step 4: Simplify right side
    3,670.64x = 6,636,631.05
  5. Step 5: Solve for x
    x = 6,636,631.05/3,670.64
  6. Step 6: Final answer
    x = 1,808.03

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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.