Home / 2,284.32-3,151.92-1,289.22

Finding the Fourth Proportional to 2,284.32, 3,151.92 and 1,289.22

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Solution

The fourth proportional to 2,284.32, 3,151.92 and 1,289.22 is: 1,778.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,284.32 : 3,151.92 = 1,289.22 : x
  2. Step 2: Convert to fraction form
    2,284.32/3,151.92 = 1,289.22/x
  3. Step 3: Cross multiply
    2,284.32x = 3,151.92 × 1,289.22
  4. Step 4: Simplify right side
    2,284.32x = 4,063,518.30
  5. Step 5: Solve for x
    x = 4,063,518.30/2,284.32
  6. Step 6: Final answer
    x = 1,778.87

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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.