Home / 3,950.29-5,451.45-2,181.90

Finding the Fourth Proportional to 3,950.29, 5,451.45 and 2,181.90

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Solution

The fourth proportional to 3,950.29, 5,451.45 and 2,181.90 is: 3,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,950.29 : 5,451.45 = 2,181.90 : x
  2. Step 2: Convert to fraction form
    3,950.29/5,451.45 = 2,181.90/x
  3. Step 3: Cross multiply
    3,950.29x = 5,451.45 × 2,181.90
  4. Step 4: Simplify right side
    3,950.29x = 11,894,518.76
  5. Step 5: Solve for x
    x = 11,894,518.76/3,950.29
  6. Step 6: Final answer
    x = 3,011.05

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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.