Home / 4,780.39-7,167.84-1,855.28

Finding the Fourth Proportional to 4,780.39, 7,167.84 and 1,855.28

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Solution

The fourth proportional to 4,780.39, 7,167.84 and 1,855.28 is: 2,781.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.39 : 7,167.84 = 1,855.28 : x
  2. Step 2: Convert to fraction form
    4,780.39/7,167.84 = 1,855.28/x
  3. Step 3: Cross multiply
    4,780.39x = 7,167.84 × 1,855.28
  4. Step 4: Simplify right side
    4,780.39x = 13,298,350.20
  5. Step 5: Solve for x
    x = 13,298,350.20/4,780.39
  6. Step 6: Final answer
    x = 2,781.85

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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.