Home / 2,336.20-3,223.92-1,288.32

Finding the Fourth Proportional to 2,336.20, 3,223.92 and 1,288.32

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Solution

The fourth proportional to 2,336.20, 3,223.92 and 1,288.32 is: 1,777.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,336.20 : 3,223.92 = 1,288.32 : x
  2. Step 2: Convert to fraction form
    2,336.20/3,223.92 = 1,288.32/x
  3. Step 3: Cross multiply
    2,336.20x = 3,223.92 × 1,288.32
  4. Step 4: Simplify right side
    2,336.20x = 4,153,440.61
  5. Step 5: Solve for x
    x = 4,153,440.61/2,336.20
  6. Step 6: Final answer
    x = 1,777.86

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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.