Home / 5,175.06-7,141.71-2,817.20

Finding the Fourth Proportional to 5,175.06, 7,141.71 and 2,817.20

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Solution

The fourth proportional to 5,175.06, 7,141.71 and 2,817.20 is: 3,887.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.06 : 7,141.71 = 2,817.20 : x
  2. Step 2: Convert to fraction form
    5,175.06/7,141.71 = 2,817.20/x
  3. Step 3: Cross multiply
    5,175.06x = 7,141.71 × 2,817.20
  4. Step 4: Simplify right side
    5,175.06x = 20,119,589.70
  5. Step 5: Solve for x
    x = 20,119,589.70/5,175.06
  6. Step 6: Final answer
    x = 3,887.80

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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.