Home / 3,785.18-5,678.32-1,187.24

Finding the Fourth Proportional to 3,785.18, 5,678.32 and 1,187.24

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Solution

The fourth proportional to 3,785.18, 5,678.32 and 1,187.24 is: 1,781.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.18 : 5,678.32 = 1,187.24 : x
  2. Step 2: Convert to fraction form
    3,785.18/5,678.32 = 1,187.24/x
  3. Step 3: Cross multiply
    3,785.18x = 5,678.32 × 1,187.24
  4. Step 4: Simplify right side
    3,785.18x = 6,741,528.64
  5. Step 5: Solve for x
    x = 6,741,528.64/3,785.18
  6. Step 6: Final answer
    x = 1,781.03

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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.