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Finding the Fourth Proportional to 2,910.33, 4,382.78 and 2,621.23

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Solution

The fourth proportional to 2,910.33, 4,382.78 and 2,621.23 is: 3,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.33 : 4,382.78 = 2,621.23 : x
  2. Step 2: Convert to fraction form
    2,910.33/4,382.78 = 2,621.23/x
  3. Step 3: Cross multiply
    2,910.33x = 4,382.78 × 2,621.23
  4. Step 4: Simplify right side
    2,910.33x = 11,488,250.36
  5. Step 5: Solve for x
    x = 11,488,250.36/2,910.33
  6. Step 6: Final answer
    x = 3,947.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.