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Finding the Fourth Proportional to 3,907.92, 5,396.54 and 2,513.08

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Solution

The fourth proportional to 3,907.92, 5,396.54 and 2,513.08 is: 3,470.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.92 : 5,396.54 = 2,513.08 : x
  2. Step 2: Convert to fraction form
    3,907.92/5,396.54 = 2,513.08/x
  3. Step 3: Cross multiply
    3,907.92x = 5,396.54 × 2,513.08
  4. Step 4: Simplify right side
    3,907.92x = 13,561,936.74
  5. Step 5: Solve for x
    x = 13,561,936.74/3,907.92
  6. Step 6: Final answer
    x = 3,470.37

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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.