Home / 7,182.30-9,911.46-3,995.56

Finding the Fourth Proportional to 7,182.30, 9,911.46 and 3,995.56

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Solution

The fourth proportional to 7,182.30, 9,911.46 and 3,995.56 is: 5,513.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182.30 : 9,911.46 = 3,995.56 : x
  2. Step 2: Convert to fraction form
    7,182.30/9,911.46 = 3,995.56/x
  3. Step 3: Cross multiply
    7,182.30x = 9,911.46 × 3,995.56
  4. Step 4: Simplify right side
    7,182.30x = 39,601,813.14
  5. Step 5: Solve for x
    x = 39,601,813.14/7,182.30
  6. Step 6: Final answer
    x = 5,513.81

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Double scale
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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.