Home / 3,702.09-5,105.40-2,760.21

Finding the Fourth Proportional to 3,702.09, 5,105.40 and 2,760.21

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Solution

The fourth proportional to 3,702.09, 5,105.40 and 2,760.21 is: 3,806.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,702.09 : 5,105.40 = 2,760.21 : x
  2. Step 2: Convert to fraction form
    3,702.09/5,105.40 = 2,760.21/x
  3. Step 3: Cross multiply
    3,702.09x = 5,105.40 × 2,760.21
  4. Step 4: Simplify right side
    3,702.09x = 14,091,976.13
  5. Step 5: Solve for x
    x = 14,091,976.13/3,702.09
  6. Step 6: Final answer
    x = 3,806.49

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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.