Home / 5,520.32-8,278.72-1,821.86

Finding the Fourth Proportional to 5,520.32, 8,278.72 and 1,821.86

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Solution

The fourth proportional to 5,520.32, 8,278.72 and 1,821.86 is: 2,732.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,520.32 : 8,278.72 = 1,821.86 : x
  2. Step 2: Convert to fraction form
    5,520.32/8,278.72 = 1,821.86/x
  3. Step 3: Cross multiply
    5,520.32x = 8,278.72 × 1,821.86
  4. Step 4: Simplify right side
    5,520.32x = 15,082,668.82
  5. Step 5: Solve for x
    x = 15,082,668.82/5,520.32
  6. Step 6: Final answer
    x = 2,732.21

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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.