Home / 3,422.88-5,138.74-1,780.56

Finding the Fourth Proportional to 3,422.88, 5,138.74 and 1,780.56

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Solution

The fourth proportional to 3,422.88, 5,138.74 and 1,780.56 is: 2,673.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.88 : 5,138.74 = 1,780.56 : x
  2. Step 2: Convert to fraction form
    3,422.88/5,138.74 = 1,780.56/x
  3. Step 3: Cross multiply
    3,422.88x = 5,138.74 × 1,780.56
  4. Step 4: Simplify right side
    3,422.88x = 9,149,834.89
  5. Step 5: Solve for x
    x = 9,149,834.89/3,422.88
  6. Step 6: Final answer
    x = 2,673.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.