Home / 3,238.88-4,470.08-1,912.55

Finding the Fourth Proportional to 3,238.88, 4,470.08 and 1,912.55

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Solution

The fourth proportional to 3,238.88, 4,470.08 and 1,912.55 is: 2,639.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,238.88 : 4,470.08 = 1,912.55 : x
  2. Step 2: Convert to fraction form
    3,238.88/4,470.08 = 1,912.55/x
  3. Step 3: Cross multiply
    3,238.88x = 4,470.08 × 1,912.55
  4. Step 4: Simplify right side
    3,238.88x = 8,549,219.59
  5. Step 5: Solve for x
    x = 8,549,219.59/3,238.88
  6. Step 6: Final answer
    x = 2,639.56

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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.