Home / 2,879.09-4,320.77-2,140.41

Finding the Fourth Proportional to 2,879.09, 4,320.77 and 2,140.41

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Solution

The fourth proportional to 2,879.09, 4,320.77 and 2,140.41 is: 3,212.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.09 : 4,320.77 = 2,140.41 : x
  2. Step 2: Convert to fraction form
    2,879.09/4,320.77 = 2,140.41/x
  3. Step 3: Cross multiply
    2,879.09x = 4,320.77 × 2,140.41
  4. Step 4: Simplify right side
    2,879.09x = 9,248,219.32
  5. Step 5: Solve for x
    x = 9,248,219.32/2,879.09
  6. Step 6: Final answer
    x = 3,212.20

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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.