Home / 3,780.88-5,212.56-3,392.08

Finding the Fourth Proportional to 3,780.88, 5,212.56 and 3,392.08

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Solution

The fourth proportional to 3,780.88, 5,212.56 and 3,392.08 is: 4,676.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.88 : 5,212.56 = 3,392.08 : x
  2. Step 2: Convert to fraction form
    3,780.88/5,212.56 = 3,392.08/x
  3. Step 3: Cross multiply
    3,780.88x = 5,212.56 × 3,392.08
  4. Step 4: Simplify right side
    3,780.88x = 17,681,420.52
  5. Step 5: Solve for x
    x = 17,681,420.52/3,780.88
  6. Step 6: Final answer
    x = 4,676.54

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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.