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Finding the Fourth Proportional to 2,725.38, 3,762.11 and 1,731.21

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Solution

The fourth proportional to 2,725.38, 3,762.11 and 1,731.21 is: 2,389.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,725.38 : 3,762.11 = 1,731.21 : x
  2. Step 2: Convert to fraction form
    2,725.38/3,762.11 = 1,731.21/x
  3. Step 3: Cross multiply
    2,725.38x = 3,762.11 × 1,731.21
  4. Step 4: Simplify right side
    2,725.38x = 6,513,002.45
  5. Step 5: Solve for x
    x = 6,513,002.45/2,725.38
  6. Step 6: Final answer
    x = 2,389.76

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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.