Home / 2,230.08-3,077.46-1,221.79

Finding the Fourth Proportional to 2,230.08, 3,077.46 and 1,221.79

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Solution

The fourth proportional to 2,230.08, 3,077.46 and 1,221.79 is: 1,686.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.08 : 3,077.46 = 1,221.79 : x
  2. Step 2: Convert to fraction form
    2,230.08/3,077.46 = 1,221.79/x
  3. Step 3: Cross multiply
    2,230.08x = 3,077.46 × 1,221.79
  4. Step 4: Simplify right side
    2,230.08x = 3,760,009.85
  5. Step 5: Solve for x
    x = 3,760,009.85/2,230.08
  6. Step 6: Final answer
    x = 1,686.04

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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.