Home / 3,919.66-5,411.68-2,429.68

Finding the Fourth Proportional to 3,919.66, 5,411.68 and 2,429.68

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Solution

The fourth proportional to 3,919.66, 5,411.68 and 2,429.68 is: 3,354.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.66 : 5,411.68 = 2,429.68 : x
  2. Step 2: Convert to fraction form
    3,919.66/5,411.68 = 2,429.68/x
  3. Step 3: Cross multiply
    3,919.66x = 5,411.68 × 2,429.68
  4. Step 4: Simplify right side
    3,919.66x = 13,148,650.66
  5. Step 5: Solve for x
    x = 13,148,650.66/3,919.66
  6. Step 6: Final answer
    x = 3,354.54

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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.