Home / 5,173.26-7,139.13-2,815.42

Finding the Fourth Proportional to 5,173.26, 7,139.13 and 2,815.42

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Solution

The fourth proportional to 5,173.26, 7,139.13 and 2,815.42 is: 3,885.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.26 : 7,139.13 = 2,815.42 : x
  2. Step 2: Convert to fraction form
    5,173.26/7,139.13 = 2,815.42/x
  3. Step 3: Cross multiply
    5,173.26x = 7,139.13 × 2,815.42
  4. Step 4: Simplify right side
    5,173.26x = 20,099,649.38
  5. Step 5: Solve for x
    x = 20,099,649.38/5,173.26
  6. Step 6: Final answer
    x = 3,885.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.