Home / 5,514.20-7,607.70-3,123.86

Finding the Fourth Proportional to 5,514.20, 7,607.70 and 3,123.86

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Solution

The fourth proportional to 5,514.20, 7,607.70 and 3,123.86 is: 4,309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,514.20 : 7,607.70 = 3,123.86 : x
  2. Step 2: Convert to fraction form
    5,514.20/7,607.70 = 3,123.86/x
  3. Step 3: Cross multiply
    5,514.20x = 7,607.70 × 3,123.86
  4. Step 4: Simplify right side
    5,514.20x = 23,765,389.72
  5. Step 5: Solve for x
    x = 23,765,389.72/5,514.20
  6. Step 6: Final answer
    x = 4,309.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.