Home / 3,780.47-5,218.22-2,289.06

Finding the Fourth Proportional to 3,780.47, 5,218.22 and 2,289.06

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Solution

The fourth proportional to 3,780.47, 5,218.22 and 2,289.06 is: 3,159.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.47 : 5,218.22 = 2,289.06 : x
  2. Step 2: Convert to fraction form
    3,780.47/5,218.22 = 2,289.06/x
  3. Step 3: Cross multiply
    3,780.47x = 5,218.22 × 2,289.06
  4. Step 4: Simplify right side
    3,780.47x = 11,944,824.40
  5. Step 5: Solve for x
    x = 11,944,824.40/3,780.47
  6. Step 6: Final answer
    x = 3,159.61

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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.