Home / 2,879.60-4,319.47-2,153.79

Finding the Fourth Proportional to 2,879.60, 4,319.47 and 2,153.79

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Solution

The fourth proportional to 2,879.60, 4,319.47 and 2,153.79 is: 3,230.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.60 : 4,319.47 = 2,153.79 : x
  2. Step 2: Convert to fraction form
    2,879.60/4,319.47 = 2,153.79/x
  3. Step 3: Cross multiply
    2,879.60x = 4,319.47 × 2,153.79
  4. Step 4: Simplify right side
    2,879.60x = 9,303,209.69
  5. Step 5: Solve for x
    x = 9,303,209.69/2,879.60
  6. Step 6: Final answer
    x = 3,230.73

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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.