Home / 3,951.78-5,455.80-2,628.24

Finding the Fourth Proportional to 3,951.78, 5,455.80 and 2,628.24

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Solution

The fourth proportional to 3,951.78, 5,455.80 and 2,628.24 is: 3,628.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.78 : 5,455.80 = 2,628.24 : x
  2. Step 2: Convert to fraction form
    3,951.78/5,455.80 = 2,628.24/x
  3. Step 3: Cross multiply
    3,951.78x = 5,455.80 × 2,628.24
  4. Step 4: Simplify right side
    3,951.78x = 14,339,151.79
  5. Step 5: Solve for x
    x = 14,339,151.79/3,951.78
  6. Step 6: Final answer
    x = 3,628.53

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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.