Home / 3,089.49-4,260.11-2,379.80

Finding the Fourth Proportional to 3,089.49, 4,260.11 and 2,379.80

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Solution

The fourth proportional to 3,089.49, 4,260.11 and 2,379.80 is: 3,281.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,089.49 : 4,260.11 = 2,379.80 : x
  2. Step 2: Convert to fraction form
    3,089.49/4,260.11 = 2,379.80/x
  3. Step 3: Cross multiply
    3,089.49x = 4,260.11 × 2,379.80
  4. Step 4: Simplify right side
    3,089.49x = 10,138,176.58
  5. Step 5: Solve for x
    x = 10,138,176.58/3,089.49
  6. Step 6: Final answer
    x = 3,281.50

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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.