Home / 1,785.15-2,463.84-1,121.61

Finding the Fourth Proportional to 1,785.15, 2,463.84 and 1,121.61

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Solution

The fourth proportional to 1,785.15, 2,463.84 and 1,121.61 is: 1,548.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,785.15 : 2,463.84 = 1,121.61 : x
  2. Step 2: Convert to fraction form
    1,785.15/2,463.84 = 1,121.61/x
  3. Step 3: Cross multiply
    1,785.15x = 2,463.84 × 1,121.61
  4. Step 4: Simplify right side
    1,785.15x = 2,763,467.58
  5. Step 5: Solve for x
    x = 2,763,467.58/1,785.15
  6. Step 6: Final answer
    x = 1,548.03

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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.