Home / 5,175.56-7,142.37-2,817.79

Finding the Fourth Proportional to 5,175.56, 7,142.37 and 2,817.79

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Solution

The fourth proportional to 5,175.56, 7,142.37 and 2,817.79 is: 3,888.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.56 : 7,142.37 = 2,817.79 : x
  2. Step 2: Convert to fraction form
    5,175.56/7,142.37 = 2,817.79/x
  3. Step 3: Cross multiply
    5,175.56x = 7,142.37 × 2,817.79
  4. Step 4: Simplify right side
    5,175.56x = 20,125,698.76
  5. Step 5: Solve for x
    x = 20,125,698.76/5,175.56
  6. Step 6: Final answer
    x = 3,888.60

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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.