Home / 2,218.62-3,328.41-1,108.63

Finding the Fourth Proportional to 2,218.62, 3,328.41 and 1,108.63

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Solution

The fourth proportional to 2,218.62, 3,328.41 and 1,108.63 is: 1,663.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.62 : 3,328.41 = 1,108.63 : x
  2. Step 2: Convert to fraction form
    2,218.62/3,328.41 = 1,108.63/x
  3. Step 3: Cross multiply
    2,218.62x = 3,328.41 × 1,108.63
  4. Step 4: Simplify right side
    2,218.62x = 3,689,983.50
  5. Step 5: Solve for x
    x = 3,689,983.50/2,218.62
  6. Step 6: Final answer
    x = 1,663.19

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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.