Home / 3,937.34-5,439.50-2,940.90

Finding the Fourth Proportional to 3,937.34, 5,439.50 and 2,940.90

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Solution

The fourth proportional to 3,937.34, 5,439.50 and 2,940.90 is: 4,062.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.34 : 5,439.50 = 2,940.90 : x
  2. Step 2: Convert to fraction form
    3,937.34/5,439.50 = 2,940.90/x
  3. Step 3: Cross multiply
    3,937.34x = 5,439.50 × 2,940.90
  4. Step 4: Simplify right side
    3,937.34x = 15,997,025.55
  5. Step 5: Solve for x
    x = 15,997,025.55/3,937.34
  6. Step 6: Final answer
    x = 4,062.90

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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.