Home / 3,181.62-4,390.50-1,855.38

Finding the Fourth Proportional to 3,181.62, 4,390.50 and 1,855.38

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Solution

The fourth proportional to 3,181.62, 4,390.50 and 1,855.38 is: 2,560.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.62 : 4,390.50 = 1,855.38 : x
  2. Step 2: Convert to fraction form
    3,181.62/4,390.50 = 1,855.38/x
  3. Step 3: Cross multiply
    3,181.62x = 4,390.50 × 1,855.38
  4. Step 4: Simplify right side
    3,181.62x = 8,146,045.89
  5. Step 5: Solve for x
    x = 8,146,045.89/3,181.62
  6. Step 6: Final answer
    x = 2,560.35

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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.