Home / 8,425.42-12,628.71-3,155.36

Finding the Fourth Proportional to 8,425.42, 12,628.71 and 3,155.36

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Solution

The fourth proportional to 8,425.42, 12,628.71 and 3,155.36 is: 4,729.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,425.42 : 12,628.71 = 3,155.36 : x
  2. Step 2: Convert to fraction form
    8,425.42/12,628.71 = 3,155.36/x
  3. Step 3: Cross multiply
    8,425.42x = 12,628.71 × 3,155.36
  4. Step 4: Simplify right side
    8,425.42x = 39,848,063.24
  5. Step 5: Solve for x
    x = 39,848,063.24/8,425.42
  6. Step 6: Final answer
    x = 4,729.51

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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.