Home / 3,778.68-5,214.90-2,100.41

Finding the Fourth Proportional to 3,778.68, 5,214.90 and 2,100.41

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Solution

The fourth proportional to 3,778.68, 5,214.90 and 2,100.41 is: 2,898.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.68 : 5,214.90 = 2,100.41 : x
  2. Step 2: Convert to fraction form
    3,778.68/5,214.90 = 2,100.41/x
  3. Step 3: Cross multiply
    3,778.68x = 5,214.90 × 2,100.41
  4. Step 4: Simplify right side
    3,778.68x = 10,953,429.47
  5. Step 5: Solve for x
    x = 10,953,429.47/3,778.68
  6. Step 6: Final answer
    x = 2,898.74

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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.