Home / 3,785.25-5,678.03-1,320.32

Finding the Fourth Proportional to 3,785.25, 5,678.03 and 1,320.32

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Solution

The fourth proportional to 3,785.25, 5,678.03 and 1,320.32 is: 1,980.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.25 : 5,678.03 = 1,320.32 : x
  2. Step 2: Convert to fraction form
    3,785.25/5,678.03 = 1,320.32/x
  3. Step 3: Cross multiply
    3,785.25x = 5,678.03 × 1,320.32
  4. Step 4: Simplify right side
    3,785.25x = 7,496,816.57
  5. Step 5: Solve for x
    x = 7,496,816.57/3,785.25
  6. Step 6: Final answer
    x = 1,980.53

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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.