Home / 1,183.32-1,767.38-857.70

Finding the Fourth Proportional to 1,183.32, 1,767.38 and 857.70

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Solution

The fourth proportional to 1,183.32, 1,767.38 and 857.70 is: 1,281.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,183.32 : 1,767.38 = 857.70 : x
  2. Step 2: Convert to fraction form
    1,183.32/1,767.38 = 857.70/x
  3. Step 3: Cross multiply
    1,183.32x = 1,767.38 × 857.70
  4. Step 4: Simplify right side
    1,183.32x = 1,515,877.54
  5. Step 5: Solve for x
    x = 1,515,877.54/1,183.32
  6. Step 6: Final answer
    x = 1,281.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.