Home / 3,212.75-4,433.12-1,886.88

Finding the Fourth Proportional to 3,212.75, 4,433.12 and 1,886.88

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Solution

The fourth proportional to 3,212.75, 4,433.12 and 1,886.88 is: 2,603.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.75 : 4,433.12 = 1,886.88 : x
  2. Step 2: Convert to fraction form
    3,212.75/4,433.12 = 1,886.88/x
  3. Step 3: Cross multiply
    3,212.75x = 4,433.12 × 1,886.88
  4. Step 4: Simplify right side
    3,212.75x = 8,364,760.10
  5. Step 5: Solve for x
    x = 8,364,760.10/3,212.75
  6. Step 6: Final answer
    x = 2,603.62

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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.