Home / 3,103.55-4,282.97-1,687.31

Finding the Fourth Proportional to 3,103.55, 4,282.97 and 1,687.31

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Solution

The fourth proportional to 3,103.55, 4,282.97 and 1,687.31 is: 2,328.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.55 : 4,282.97 = 1,687.31 : x
  2. Step 2: Convert to fraction form
    3,103.55/4,282.97 = 1,687.31/x
  3. Step 3: Cross multiply
    3,103.55x = 4,282.97 × 1,687.31
  4. Step 4: Simplify right side
    3,103.55x = 7,226,700.38
  5. Step 5: Solve for x
    x = 7,226,700.38/3,103.55
  6. Step 6: Final answer
    x = 2,328.53

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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.