Home / 3,780.78-5,667.52-2,390.66

Finding the Fourth Proportional to 3,780.78, 5,667.52 and 2,390.66

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Solution

The fourth proportional to 3,780.78, 5,667.52 and 2,390.66 is: 3,583.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.78 : 5,667.52 = 2,390.66 : x
  2. Step 2: Convert to fraction form
    3,780.78/5,667.52 = 2,390.66/x
  3. Step 3: Cross multiply
    3,780.78x = 5,667.52 × 2,390.66
  4. Step 4: Simplify right side
    3,780.78x = 13,549,136.66
  5. Step 5: Solve for x
    x = 13,549,136.66/3,780.78
  6. Step 6: Final answer
    x = 3,583.69

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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.