Home / 3,474.30-5,211.90-1,720.20

Finding the Fourth Proportional to 3,474.30, 5,211.90 and 1,720.20

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Solution

The fourth proportional to 3,474.30, 5,211.90 and 1,720.20 is: 2,580.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,474.30 : 5,211.90 = 1,720.20 : x
  2. Step 2: Convert to fraction form
    3,474.30/5,211.90 = 1,720.20/x
  3. Step 3: Cross multiply
    3,474.30x = 5,211.90 × 1,720.20
  4. Step 4: Simplify right side
    3,474.30x = 8,965,510.38
  5. Step 5: Solve for x
    x = 8,965,510.38/3,474.30
  6. Step 6: Final answer
    x = 2,580.52

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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.