Home / 3,778.12-5,214.64-2,100.10

Finding the Fourth Proportional to 3,778.12, 5,214.64 and 2,100.10

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Solution

The fourth proportional to 3,778.12, 5,214.64 and 2,100.10 is: 2,898.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.12 : 5,214.64 = 2,100.10 : x
  2. Step 2: Convert to fraction form
    3,778.12/5,214.64 = 2,100.10/x
  3. Step 3: Cross multiply
    3,778.12x = 5,214.64 × 2,100.10
  4. Step 4: Simplify right side
    3,778.12x = 10,951,265.46
  5. Step 5: Solve for x
    x = 10,951,265.46/3,778.12
  6. Step 6: Final answer
    x = 2,898.60

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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.