Home / 10,279.79-15,420.77-3,260.80

Finding the Fourth Proportional to 10,279.79, 15,420.77 and 3,260.80

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Solution

The fourth proportional to 10,279.79, 15,420.77 and 3,260.80 is: 4,891.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.79 : 15,420.77 = 3,260.80 : x
  2. Step 2: Convert to fraction form
    10,279.79/15,420.77 = 3,260.80/x
  3. Step 3: Cross multiply
    10,279.79x = 15,420.77 × 3,260.80
  4. Step 4: Simplify right side
    10,279.79x = 50,284,046.82
  5. Step 5: Solve for x
    x = 50,284,046.82/10,279.79
  6. Step 6: Final answer
    x = 4,891.54

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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.