Home / 5,185.38-7,156.20-3,930.24

Finding the Fourth Proportional to 5,185.38, 7,156.20 and 3,930.24

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Solution

The fourth proportional to 5,185.38, 7,156.20 and 3,930.24 is: 5,424.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.38 : 7,156.20 = 3,930.24 : x
  2. Step 2: Convert to fraction form
    5,185.38/7,156.20 = 3,930.24/x
  3. Step 3: Cross multiply
    5,185.38x = 7,156.20 × 3,930.24
  4. Step 4: Simplify right side
    5,185.38x = 28,125,583.49
  5. Step 5: Solve for x
    x = 28,125,583.49/5,185.38
  6. Step 6: Final answer
    x = 5,424.02

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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.