Home / 2,808.30-4,212.45-2,261.55

Finding the Fourth Proportional to 2,808.30, 4,212.45 and 2,261.55

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Solution

The fourth proportional to 2,808.30, 4,212.45 and 2,261.55 is: 3,392.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.30 : 4,212.45 = 2,261.55 : x
  2. Step 2: Convert to fraction form
    2,808.30/4,212.45 = 2,261.55/x
  3. Step 3: Cross multiply
    2,808.30x = 4,212.45 × 2,261.55
  4. Step 4: Simplify right side
    2,808.30x = 9,526,666.30
  5. Step 5: Solve for x
    x = 9,526,666.30/2,808.30
  6. Step 6: Final answer
    x = 3,392.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.