Home / 1,800.36-2,485.62-1,179.72

Finding the Fourth Proportional to 1,800.36, 2,485.62 and 1,179.72

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Solution

The fourth proportional to 1,800.36, 2,485.62 and 1,179.72 is: 1,628.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,800.36 : 2,485.62 = 1,179.72 : x
  2. Step 2: Convert to fraction form
    1,800.36/2,485.62 = 1,179.72/x
  3. Step 3: Cross multiply
    1,800.36x = 2,485.62 × 1,179.72
  4. Step 4: Simplify right side
    1,800.36x = 2,932,335.63
  5. Step 5: Solve for x
    x = 2,932,335.63/1,800.36
  6. Step 6: Final answer
    x = 1,628.75

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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.