Home / 3,215.12-4,438.30-1,888.90

Finding the Fourth Proportional to 3,215.12, 4,438.30 and 1,888.90

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Solution

The fourth proportional to 3,215.12, 4,438.30 and 1,888.90 is: 2,607.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.12 : 4,438.30 = 1,888.90 : x
  2. Step 2: Convert to fraction form
    3,215.12/4,438.30 = 1,888.90/x
  3. Step 3: Cross multiply
    3,215.12x = 4,438.30 × 1,888.90
  4. Step 4: Simplify right side
    3,215.12x = 8,383,520.69
  5. Step 5: Solve for x
    x = 8,383,520.69/3,215.12
  6. Step 6: Final answer
    x = 2,607.53

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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.