Home / 5,171.16-7,136.18-2,813.30

Finding the Fourth Proportional to 5,171.16, 7,136.18 and 2,813.30

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Solution

The fourth proportional to 5,171.16, 7,136.18 and 2,813.30 is: 3,882.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.16 : 7,136.18 = 2,813.30 : x
  2. Step 2: Convert to fraction form
    5,171.16/7,136.18 = 2,813.30/x
  3. Step 3: Cross multiply
    5,171.16x = 7,136.18 × 2,813.30
  4. Step 4: Simplify right side
    5,171.16x = 20,076,215.19
  5. Step 5: Solve for x
    x = 20,076,215.19/5,171.16
  6. Step 6: Final answer
    x = 3,882.34

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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.