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Finding the Fourth Proportional to 2,174.70, 3,256.22 and 1,248.86

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Solution

The fourth proportional to 2,174.70, 3,256.22 and 1,248.86 is: 1,869.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.70 : 3,256.22 = 1,248.86 : x
  2. Step 2: Convert to fraction form
    2,174.70/3,256.22 = 1,248.86/x
  3. Step 3: Cross multiply
    2,174.70x = 3,256.22 × 1,248.86
  4. Step 4: Simplify right side
    2,174.70x = 4,066,562.91
  5. Step 5: Solve for x
    x = 4,066,562.91/2,174.70
  6. Step 6: Final answer
    x = 1,869.94

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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.