Home / 3,860.34-5,326.95-2,181.90

Finding the Fourth Proportional to 3,860.34, 5,326.95 and 2,181.90

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Solution

The fourth proportional to 3,860.34, 5,326.95 and 2,181.90 is: 3,010.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.34 : 5,326.95 = 2,181.90 : x
  2. Step 2: Convert to fraction form
    3,860.34/5,326.95 = 2,181.90/x
  3. Step 3: Cross multiply
    3,860.34x = 5,326.95 × 2,181.90
  4. Step 4: Simplify right side
    3,860.34x = 11,622,872.21
  5. Step 5: Solve for x
    x = 11,622,872.21/3,860.34
  6. Step 6: Final answer
    x = 3,010.84

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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.