Home / 2,179.92-3,005.40-1,805.52

Finding the Fourth Proportional to 2,179.92, 3,005.40 and 1,805.52

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Solution

The fourth proportional to 2,179.92, 3,005.40 and 1,805.52 is: 2,489.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.92 : 3,005.40 = 1,805.52 : x
  2. Step 2: Convert to fraction form
    2,179.92/3,005.40 = 1,805.52/x
  3. Step 3: Cross multiply
    2,179.92x = 3,005.40 × 1,805.52
  4. Step 4: Simplify right side
    2,179.92x = 5,426,309.81
  5. Step 5: Solve for x
    x = 5,426,309.81/2,179.92
  6. Step 6: Final answer
    x = 2,489.22

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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.