Home / 2,218.08-3,303.87-2,105.76

Finding the Fourth Proportional to 2,218.08, 3,303.87 and 2,105.76

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Solution

The fourth proportional to 2,218.08, 3,303.87 and 2,105.76 is: 3,136.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.08 : 3,303.87 = 2,105.76 : x
  2. Step 2: Convert to fraction form
    2,218.08/3,303.87 = 2,105.76/x
  3. Step 3: Cross multiply
    2,218.08x = 3,303.87 × 2,105.76
  4. Step 4: Simplify right side
    2,218.08x = 6,957,157.29
  5. Step 5: Solve for x
    x = 6,957,157.29/2,218.08
  6. Step 6: Final answer
    x = 3,136.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.