Home / 3,778.90-5,214.93-2,100.43

Finding the Fourth Proportional to 3,778.90, 5,214.93 and 2,100.43

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Solution

The fourth proportional to 3,778.90, 5,214.93 and 2,100.43 is: 2,898.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.90 : 5,214.93 = 2,100.43 : x
  2. Step 2: Convert to fraction form
    3,778.90/5,214.93 = 2,100.43/x
  3. Step 3: Cross multiply
    3,778.90x = 5,214.93 × 2,100.43
  4. Step 4: Simplify right side
    3,778.90x = 10,953,595.42
  5. Step 5: Solve for x
    x = 10,953,595.42/3,778.90
  6. Step 6: Final answer
    x = 2,898.62

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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.