Home / 3,619.12-5,428.58-1,154.09

Finding the Fourth Proportional to 3,619.12, 5,428.58 and 1,154.09

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Solution

The fourth proportional to 3,619.12, 5,428.58 and 1,154.09 is: 1,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.12 : 5,428.58 = 1,154.09 : x
  2. Step 2: Convert to fraction form
    3,619.12/5,428.58 = 1,154.09/x
  3. Step 3: Cross multiply
    3,619.12x = 5,428.58 × 1,154.09
  4. Step 4: Simplify right side
    3,619.12x = 6,265,069.89
  5. Step 5: Solve for x
    x = 6,265,069.89/3,619.12
  6. Step 6: Final answer
    x = 1,731.10

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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.