Home / 3,216.66-4,439.09-1,781.04

Finding the Fourth Proportional to 3,216.66, 4,439.09 and 1,781.04

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Solution

The fourth proportional to 3,216.66, 4,439.09 and 1,781.04 is: 2,457.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.66 : 4,439.09 = 1,781.04 : x
  2. Step 2: Convert to fraction form
    3,216.66/4,439.09 = 1,781.04/x
  3. Step 3: Cross multiply
    3,216.66x = 4,439.09 × 1,781.04
  4. Step 4: Simplify right side
    3,216.66x = 7,906,187.95
  5. Step 5: Solve for x
    x = 7,906,187.95/3,216.66
  6. Step 6: Final answer
    x = 2,457.89

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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.