Home / 3,920.61-5,878.49-2,070.57

Finding the Fourth Proportional to 3,920.61, 5,878.49 and 2,070.57

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Solution

The fourth proportional to 3,920.61, 5,878.49 and 2,070.57 is: 3,104.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.61 : 5,878.49 = 2,070.57 : x
  2. Step 2: Convert to fraction form
    3,920.61/5,878.49 = 2,070.57/x
  3. Step 3: Cross multiply
    3,920.61x = 5,878.49 × 2,070.57
  4. Step 4: Simplify right side
    3,920.61x = 12,171,814.69
  5. Step 5: Solve for x
    x = 12,171,814.69/3,920.61
  6. Step 6: Final answer
    x = 3,104.57

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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.