Home / 2,219.27-3,329.40-659.75

Finding the Fourth Proportional to 2,219.27, 3,329.40 and 659.75

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Solution

The fourth proportional to 2,219.27, 3,329.40 and 659.75 is: 989.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.27 : 3,329.40 = 659.75 : x
  2. Step 2: Convert to fraction form
    2,219.27/3,329.40 = 659.75/x
  3. Step 3: Cross multiply
    2,219.27x = 3,329.40 × 659.75
  4. Step 4: Simplify right side
    2,219.27x = 2,196,557.48
  5. Step 5: Solve for x
    x = 2,196,557.48/2,219.27
  6. Step 6: Final answer
    x = 989.77

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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.