Home / 5,173.53-7,139.25-2,815.68

Finding the Fourth Proportional to 5,173.53, 7,139.25 and 2,815.68

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Solution

The fourth proportional to 5,173.53, 7,139.25 and 2,815.68 is: 3,885.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.53 : 7,139.25 = 2,815.68 : x
  2. Step 2: Convert to fraction form
    5,173.53/7,139.25 = 2,815.68/x
  3. Step 3: Cross multiply
    5,173.53x = 7,139.25 × 2,815.68
  4. Step 4: Simplify right side
    5,173.53x = 20,101,843.44
  5. Step 5: Solve for x
    x = 20,101,843.44/5,173.53
  6. Step 6: Final answer
    x = 3,885.52

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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.