Home / 3,923.19-5,414.01-2,130.67

Finding the Fourth Proportional to 3,923.19, 5,414.01 and 2,130.67

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Solution

The fourth proportional to 3,923.19, 5,414.01 and 2,130.67 is: 2,940.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.19 : 5,414.01 = 2,130.67 : x
  2. Step 2: Convert to fraction form
    3,923.19/5,414.01 = 2,130.67/x
  3. Step 3: Cross multiply
    3,923.19x = 5,414.01 × 2,130.67
  4. Step 4: Simplify right side
    3,923.19x = 11,535,468.69
  5. Step 5: Solve for x
    x = 11,535,468.69/3,923.19
  6. Step 6: Final answer
    x = 2,940.33

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Half scale
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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.