Home / 3,966.90-5,474.18-2,288.39

Finding the Fourth Proportional to 3,966.90, 5,474.18 and 2,288.39

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Solution

The fourth proportional to 3,966.90, 5,474.18 and 2,288.39 is: 3,157.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,966.90 : 5,474.18 = 2,288.39 : x
  2. Step 2: Convert to fraction form
    3,966.90/5,474.18 = 2,288.39/x
  3. Step 3: Cross multiply
    3,966.90x = 5,474.18 × 2,288.39
  4. Step 4: Simplify right side
    3,966.90x = 12,527,019.96
  5. Step 5: Solve for x
    x = 12,527,019.96/3,966.90
  6. Step 6: Final answer
    x = 3,157.89

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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.