Home / 2,631.72-3,945.02-2,199.72

Finding the Fourth Proportional to 2,631.72, 3,945.02 and 2,199.72

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Solution

The fourth proportional to 2,631.72, 3,945.02 and 2,199.72 is: 3,297.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.72 : 3,945.02 = 2,199.72 : x
  2. Step 2: Convert to fraction form
    2,631.72/3,945.02 = 2,199.72/x
  3. Step 3: Cross multiply
    2,631.72x = 3,945.02 × 2,199.72
  4. Step 4: Simplify right side
    2,631.72x = 8,677,939.39
  5. Step 5: Solve for x
    x = 8,677,939.39/2,631.72
  6. Step 6: Final answer
    x = 3,297.44

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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.