Home / 3,455.40-5,176.91-2,100.53

Finding the Fourth Proportional to 3,455.40, 5,176.91 and 2,100.53

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Solution

The fourth proportional to 3,455.40, 5,176.91 and 2,100.53 is: 3,147.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.40 : 5,176.91 = 2,100.53 : x
  2. Step 2: Convert to fraction form
    3,455.40/5,176.91 = 2,100.53/x
  3. Step 3: Cross multiply
    3,455.40x = 5,176.91 × 2,100.53
  4. Step 4: Simplify right side
    3,455.40x = 10,874,218.38
  5. Step 5: Solve for x
    x = 10,874,218.38/3,455.40
  6. Step 6: Final answer
    x = 3,147.02

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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.