Home / 3,181.47-4,380.64-2,761.08

Finding the Fourth Proportional to 3,181.47, 4,380.64 and 2,761.08

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Solution

The fourth proportional to 3,181.47, 4,380.64 and 2,761.08 is: 3,801.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.47 : 4,380.64 = 2,761.08 : x
  2. Step 2: Convert to fraction form
    3,181.47/4,380.64 = 2,761.08/x
  3. Step 3: Cross multiply
    3,181.47x = 4,380.64 × 2,761.08
  4. Step 4: Simplify right side
    3,181.47x = 12,095,297.49
  5. Step 5: Solve for x
    x = 12,095,297.49/3,181.47
  6. Step 6: Final answer
    x = 3,801.80

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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.