Home / 5,175.38-7,140.80-2,936.76

Finding the Fourth Proportional to 5,175.38, 7,140.80 and 2,936.76

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Solution

The fourth proportional to 5,175.38, 7,140.80 and 2,936.76 is: 4,052.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.38 : 7,140.80 = 2,936.76 : x
  2. Step 2: Convert to fraction form
    5,175.38/7,140.80 = 2,936.76/x
  3. Step 3: Cross multiply
    5,175.38x = 7,140.80 × 2,936.76
  4. Step 4: Simplify right side
    5,175.38x = 20,970,815.81
  5. Step 5: Solve for x
    x = 20,970,815.81/5,175.38
  6. Step 6: Final answer
    x = 4,052.03

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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.