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Finding the Fourth Proportional to 3,640.07, 5,460.10 and 2,906.21

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Solution

The fourth proportional to 3,640.07, 5,460.10 and 2,906.21 is: 4,359.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.07 : 5,460.10 = 2,906.21 : x
  2. Step 2: Convert to fraction form
    3,640.07/5,460.10 = 2,906.21/x
  3. Step 3: Cross multiply
    3,640.07x = 5,460.10 × 2,906.21
  4. Step 4: Simplify right side
    3,640.07x = 15,868,203.61
  5. Step 5: Solve for x
    x = 15,868,203.61/3,640.07
  6. Step 6: Final answer
    x = 4,359.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.