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Finding the Fourth Proportional to 4,879.70, 6,734.00 and 2,641.56

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Solution

The fourth proportional to 4,879.70, 6,734.00 and 2,641.56 is: 3,645.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.70 : 6,734.00 = 2,641.56 : x
  2. Step 2: Convert to fraction form
    4,879.70/6,734.00 = 2,641.56/x
  3. Step 3: Cross multiply
    4,879.70x = 6,734.00 × 2,641.56
  4. Step 4: Simplify right side
    4,879.70x = 17,788,251.83
  5. Step 5: Solve for x
    x = 17,788,251.83/4,879.70
  6. Step 6: Final answer
    x = 3,645.36

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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.