Home / 3,785.12-5,677.70-1,319.93

Finding the Fourth Proportional to 3,785.12, 5,677.70 and 1,319.93

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Solution

The fourth proportional to 3,785.12, 5,677.70 and 1,319.93 is: 1,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.12 : 5,677.70 = 1,319.93 : x
  2. Step 2: Convert to fraction form
    3,785.12/5,677.70 = 1,319.93/x
  3. Step 3: Cross multiply
    3,785.12x = 5,677.70 × 1,319.93
  4. Step 4: Simplify right side
    3,785.12x = 7,494,131.57
  5. Step 5: Solve for x
    x = 7,494,131.57/3,785.12
  6. Step 6: Final answer
    x = 1,979.90

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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.