Home / 3,859.13-5,325.81-2,180.61

Finding the Fourth Proportional to 3,859.13, 5,325.81 and 2,180.61

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Solution

The fourth proportional to 3,859.13, 5,325.81 and 2,180.61 is: 3,009.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.13 : 5,325.81 = 2,180.61 : x
  2. Step 2: Convert to fraction form
    3,859.13/5,325.81 = 2,180.61/x
  3. Step 3: Cross multiply
    3,859.13x = 5,325.81 × 2,180.61
  4. Step 4: Simplify right side
    3,859.13x = 11,613,495.78
  5. Step 5: Solve for x
    x = 11,613,495.78/3,859.13
  6. Step 6: Final answer
    x = 3,009.36

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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.