Home / 2,230.12-3,077.47-1,286.08

Finding the Fourth Proportional to 2,230.12, 3,077.47 and 1,286.08

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Solution

The fourth proportional to 2,230.12, 3,077.47 and 1,286.08 is: 1,774.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.12 : 3,077.47 = 1,286.08 : x
  2. Step 2: Convert to fraction form
    2,230.12/3,077.47 = 1,286.08/x
  3. Step 3: Cross multiply
    2,230.12x = 3,077.47 × 1,286.08
  4. Step 4: Simplify right side
    2,230.12x = 3,957,872.62
  5. Step 5: Solve for x
    x = 3,957,872.62/2,230.12
  6. Step 6: Final answer
    x = 1,774.74

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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.