Home / 5,171.40-7,136.72-2,813.71

Finding the Fourth Proportional to 5,171.40, 7,136.72 and 2,813.71

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Solution

The fourth proportional to 5,171.40, 7,136.72 and 2,813.71 is: 3,883.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.40 : 7,136.72 = 2,813.71 : x
  2. Step 2: Convert to fraction form
    5,171.40/7,136.72 = 2,813.71/x
  3. Step 3: Cross multiply
    5,171.40x = 7,136.72 × 2,813.71
  4. Step 4: Simplify right side
    5,171.40x = 20,080,660.43
  5. Step 5: Solve for x
    x = 20,080,660.43/5,171.40
  6. Step 6: Final answer
    x = 3,883.02

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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.