Home / 3,155.12-4,353.72-1,757.78

Finding the Fourth Proportional to 3,155.12, 4,353.72 and 1,757.78

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Solution

The fourth proportional to 3,155.12, 4,353.72 and 1,757.78 is: 2,425.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.12 : 4,353.72 = 1,757.78 : x
  2. Step 2: Convert to fraction form
    3,155.12/4,353.72 = 1,757.78/x
  3. Step 3: Cross multiply
    3,155.12x = 4,353.72 × 1,757.78
  4. Step 4: Simplify right side
    3,155.12x = 7,652,881.94
  5. Step 5: Solve for x
    x = 7,652,881.94/3,155.12
  6. Step 6: Final answer
    x = 2,425.54

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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.