Home / 2,208.60-3,311.70-910.20

Finding the Fourth Proportional to 2,208.60, 3,311.70 and 910.20

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Solution

The fourth proportional to 2,208.60, 3,311.70 and 910.20 is: 1,364.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.60 : 3,311.70 = 910.20 : x
  2. Step 2: Convert to fraction form
    2,208.60/3,311.70 = 910.20/x
  3. Step 3: Cross multiply
    2,208.60x = 3,311.70 × 910.20
  4. Step 4: Simplify right side
    2,208.60x = 3,014,309.34
  5. Step 5: Solve for x
    x = 3,014,309.34/2,208.60
  6. Step 6: Final answer
    x = 1,364.81

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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.