Home / 5,520.63-8,278.91-1,821.76

Finding the Fourth Proportional to 5,520.63, 8,278.91 and 1,821.76

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Solution

The fourth proportional to 5,520.63, 8,278.91 and 1,821.76 is: 2,731.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,520.63 : 8,278.91 = 1,821.76 : x
  2. Step 2: Convert to fraction form
    5,520.63/8,278.91 = 1,821.76/x
  3. Step 3: Cross multiply
    5,520.63x = 8,278.91 × 1,821.76
  4. Step 4: Simplify right side
    5,520.63x = 15,082,191.64
  5. Step 5: Solve for x
    x = 15,082,191.64/5,520.63
  6. Step 6: Final answer
    x = 2,731.97

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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.