Home / 3,620.77-5,431.56-1,154.71

Finding the Fourth Proportional to 3,620.77, 5,431.56 and 1,154.71

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Solution

The fourth proportional to 3,620.77, 5,431.56 and 1,154.71 is: 1,732.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.77 : 5,431.56 = 1,154.71 : x
  2. Step 2: Convert to fraction form
    3,620.77/5,431.56 = 1,154.71/x
  3. Step 3: Cross multiply
    3,620.77x = 5,431.56 × 1,154.71
  4. Step 4: Simplify right side
    3,620.77x = 6,271,876.65
  5. Step 5: Solve for x
    x = 6,271,876.65/3,620.77
  6. Step 6: Final answer
    x = 1,732.19

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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.