Home / 3,761.39-5,187.57-2,819.40

Finding the Fourth Proportional to 3,761.39, 5,187.57 and 2,819.40

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Solution

The fourth proportional to 3,761.39, 5,187.57 and 2,819.40 is: 3,888.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.39 : 5,187.57 = 2,819.40 : x
  2. Step 2: Convert to fraction form
    3,761.39/5,187.57 = 2,819.40/x
  3. Step 3: Cross multiply
    3,761.39x = 5,187.57 × 2,819.40
  4. Step 4: Simplify right side
    3,761.39x = 14,625,834.86
  5. Step 5: Solve for x
    x = 14,625,834.86/3,761.39
  6. Step 6: Final answer
    x = 3,888.41

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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.