Home / 2,207.50-3,311.26-1,289.48

Finding the Fourth Proportional to 2,207.50, 3,311.26 and 1,289.48

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Solution

The fourth proportional to 2,207.50, 3,311.26 and 1,289.48 is: 1,934.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.50 : 3,311.26 = 1,289.48 : x
  2. Step 2: Convert to fraction form
    2,207.50/3,311.26 = 1,289.48/x
  3. Step 3: Cross multiply
    2,207.50x = 3,311.26 × 1,289.48
  4. Step 4: Simplify right side
    2,207.50x = 4,269,783.76
  5. Step 5: Solve for x
    x = 4,269,783.76/2,207.50
  6. Step 6: Final answer
    x = 1,934.22

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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.