Home / 4,121.57-5,688.79-2,354.20

Finding the Fourth Proportional to 4,121.57, 5,688.79 and 2,354.20

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Solution

The fourth proportional to 4,121.57, 5,688.79 and 2,354.20 is: 3,249.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,121.57 : 5,688.79 = 2,354.20 : x
  2. Step 2: Convert to fraction form
    4,121.57/5,688.79 = 2,354.20/x
  3. Step 3: Cross multiply
    4,121.57x = 5,688.79 × 2,354.20
  4. Step 4: Simplify right side
    4,121.57x = 13,392,542.55
  5. Step 5: Solve for x
    x = 13,392,542.55/4,121.57
  6. Step 6: Final answer
    x = 3,249.38

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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.