Home / 8,427.42-12,631.71-3,157.36

Finding the Fourth Proportional to 8,427.42, 12,631.71 and 3,157.36

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Solution

The fourth proportional to 8,427.42, 12,631.71 and 3,157.36 is: 4,732.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.42 : 12,631.71 = 3,157.36 : x
  2. Step 2: Convert to fraction form
    8,427.42/12,631.71 = 3,157.36/x
  3. Step 3: Cross multiply
    8,427.42x = 12,631.71 × 3,157.36
  4. Step 4: Simplify right side
    8,427.42x = 39,882,855.89
  5. Step 5: Solve for x
    x = 39,882,855.89/8,427.42
  6. Step 6: Final answer
    x = 4,732.51

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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.