Home / 3,860.32-5,327.13-2,181.90

Finding the Fourth Proportional to 3,860.32, 5,327.13 and 2,181.90

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Solution

The fourth proportional to 3,860.32, 5,327.13 and 2,181.90 is: 3,010.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.32 : 5,327.13 = 2,181.90 : x
  2. Step 2: Convert to fraction form
    3,860.32/5,327.13 = 2,181.90/x
  3. Step 3: Cross multiply
    3,860.32x = 5,327.13 × 2,181.90
  4. Step 4: Simplify right side
    3,860.32x = 11,623,264.95
  5. Step 5: Solve for x
    x = 11,623,264.95/3,860.32
  6. Step 6: Final answer
    x = 3,010.96

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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.