Home / 3,122.72-4,309.35-1,706.42

Finding the Fourth Proportional to 3,122.72, 4,309.35 and 1,706.42

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Solution

The fourth proportional to 3,122.72, 4,309.35 and 1,706.42 is: 2,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.72 : 4,309.35 = 1,706.42 : x
  2. Step 2: Convert to fraction form
    3,122.72/4,309.35 = 1,706.42/x
  3. Step 3: Cross multiply
    3,122.72x = 4,309.35 × 1,706.42
  4. Step 4: Simplify right side
    3,122.72x = 7,353,539.48
  5. Step 5: Solve for x
    x = 7,353,539.48/3,122.72
  6. Step 6: Final answer
    x = 2,354.85

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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.