Home / 5,175.36-7,141.76-2,817.28

Finding the Fourth Proportional to 5,175.36, 7,141.76 and 2,817.28

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Solution

The fourth proportional to 5,175.36, 7,141.76 and 2,817.28 is: 3,887.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.36 : 7,141.76 = 2,817.28 : x
  2. Step 2: Convert to fraction form
    5,175.36/7,141.76 = 2,817.28/x
  3. Step 3: Cross multiply
    5,175.36x = 7,141.76 × 2,817.28
  4. Step 4: Simplify right side
    5,175.36x = 20,120,337.61
  5. Step 5: Solve for x
    x = 20,120,337.61/5,175.36
  6. Step 6: Final answer
    x = 3,887.72

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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.