Home / 3,778.42-5,214.52-2,100.40

Finding the Fourth Proportional to 3,778.42, 5,214.52 and 2,100.40

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Solution

The fourth proportional to 3,778.42, 5,214.52 and 2,100.40 is: 2,898.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.42 : 5,214.52 = 2,100.40 : x
  2. Step 2: Convert to fraction form
    3,778.42/5,214.52 = 2,100.40/x
  3. Step 3: Cross multiply
    3,778.42x = 5,214.52 × 2,100.40
  4. Step 4: Simplify right side
    3,778.42x = 10,952,577.81
  5. Step 5: Solve for x
    x = 10,952,577.81/3,778.42
  6. Step 6: Final answer
    x = 2,898.72

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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.