Home / 3,876.86-5,350.66-2,619.74

Finding the Fourth Proportional to 3,876.86, 5,350.66 and 2,619.74

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Solution

The fourth proportional to 3,876.86, 5,350.66 and 2,619.74 is: 3,615.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.86 : 5,350.66 = 2,619.74 : x
  2. Step 2: Convert to fraction form
    3,876.86/5,350.66 = 2,619.74/x
  3. Step 3: Cross multiply
    3,876.86x = 5,350.66 × 2,619.74
  4. Step 4: Simplify right side
    3,876.86x = 14,017,338.03
  5. Step 5: Solve for x
    x = 14,017,338.03/3,876.86
  6. Step 6: Final answer
    x = 3,615.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.