Home / 3,785.80-5,221.45-2,459.93

Finding the Fourth Proportional to 3,785.80, 5,221.45 and 2,459.93

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Solution

The fourth proportional to 3,785.80, 5,221.45 and 2,459.93 is: 3,392.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.80 : 5,221.45 = 2,459.93 : x
  2. Step 2: Convert to fraction form
    3,785.80/5,221.45 = 2,459.93/x
  3. Step 3: Cross multiply
    3,785.80x = 5,221.45 × 2,459.93
  4. Step 4: Simplify right side
    3,785.80x = 12,844,389.20
  5. Step 5: Solve for x
    x = 12,844,389.20/3,785.80
  6. Step 6: Final answer
    x = 3,392.78

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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.