Home / 2,171.81-3,254.30-1,679.42

Finding the Fourth Proportional to 2,171.81, 3,254.30 and 1,679.42

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Solution

The fourth proportional to 2,171.81, 3,254.30 and 1,679.42 is: 2,516.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.81 : 3,254.30 = 1,679.42 : x
  2. Step 2: Convert to fraction form
    2,171.81/3,254.30 = 1,679.42/x
  3. Step 3: Cross multiply
    2,171.81x = 3,254.30 × 1,679.42
  4. Step 4: Simplify right side
    2,171.81x = 5,465,311.84
  5. Step 5: Solve for x
    x = 5,465,311.84/2,171.81
  6. Step 6: Final answer
    x = 2,516.48

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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.