Home / 2,179.37-3,269.30-718.20

Finding the Fourth Proportional to 2,179.37, 3,269.30 and 718.20

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Solution

The fourth proportional to 2,179.37, 3,269.30 and 718.20 is: 1,077.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.37 : 3,269.30 = 718.20 : x
  2. Step 2: Convert to fraction form
    2,179.37/3,269.30 = 718.20/x
  3. Step 3: Cross multiply
    2,179.37x = 3,269.30 × 718.20
  4. Step 4: Simplify right side
    2,179.37x = 2,348,007.67
  5. Step 5: Solve for x
    x = 2,348,007.67/2,179.37
  6. Step 6: Final answer
    x = 1,077.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.