Home / 3,859.36-5,325.92-2,180.76

Finding the Fourth Proportional to 3,859.36, 5,325.92 and 2,180.76

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Solution

The fourth proportional to 3,859.36, 5,325.92 and 2,180.76 is: 3,009.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.36 : 5,325.92 = 2,180.76 : x
  2. Step 2: Convert to fraction form
    3,859.36/5,325.92 = 2,180.76/x
  3. Step 3: Cross multiply
    3,859.36x = 5,325.92 × 2,180.76
  4. Step 4: Simplify right side
    3,859.36x = 11,614,553.30
  5. Step 5: Solve for x
    x = 11,614,553.30/3,859.36
  6. Step 6: Final answer
    x = 3,009.45

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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.