Home / 8,455.62-12,685.59-3,190.98

Finding the Fourth Proportional to 8,455.62, 12,685.59 and 3,190.98

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Solution

The fourth proportional to 8,455.62, 12,685.59 and 3,190.98 is: 4,787.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.62 : 12,685.59 = 3,190.98 : x
  2. Step 2: Convert to fraction form
    8,455.62/12,685.59 = 3,190.98/x
  3. Step 3: Cross multiply
    8,455.62x = 12,685.59 × 3,190.98
  4. Step 4: Simplify right side
    8,455.62x = 40,479,463.98
  5. Step 5: Solve for x
    x = 40,479,463.98/8,455.62
  6. Step 6: Final answer
    x = 4,787.29

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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.