Home / 3,785.13-5,678.64-1,319.97

Finding the Fourth Proportional to 3,785.13, 5,678.64 and 1,319.97

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Solution

The fourth proportional to 3,785.13, 5,678.64 and 1,319.97 is: 1,980.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.13 : 5,678.64 = 1,319.97 : x
  2. Step 2: Convert to fraction form
    3,785.13/5,678.64 = 1,319.97/x
  3. Step 3: Cross multiply
    3,785.13x = 5,678.64 × 1,319.97
  4. Step 4: Simplify right side
    3,785.13x = 7,495,634.44
  5. Step 5: Solve for x
    x = 7,495,634.44/3,785.13
  6. Step 6: Final answer
    x = 1,980.28

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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.