Home / 2,179.23-3,269.32-718.28

Finding the Fourth Proportional to 2,179.23, 3,269.32 and 718.28

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Solution

The fourth proportional to 2,179.23, 3,269.32 and 718.28 is: 1,077.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.23 : 3,269.32 = 718.28 : x
  2. Step 2: Convert to fraction form
    2,179.23/3,269.32 = 718.28/x
  3. Step 3: Cross multiply
    2,179.23x = 3,269.32 × 718.28
  4. Step 4: Simplify right side
    2,179.23x = 2,348,287.17
  5. Step 5: Solve for x
    x = 2,348,287.17/2,179.23
  6. Step 6: Final answer
    x = 1,077.58

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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.