Home / 5,519.01-8,279.55-1,821.40

Finding the Fourth Proportional to 5,519.01, 8,279.55 and 1,821.40

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Solution

The fourth proportional to 5,519.01, 8,279.55 and 1,821.40 is: 2,732.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,519.01 : 8,279.55 = 1,821.40 : x
  2. Step 2: Convert to fraction form
    5,519.01/8,279.55 = 1,821.40/x
  3. Step 3: Cross multiply
    5,519.01x = 8,279.55 × 1,821.40
  4. Step 4: Simplify right side
    5,519.01x = 15,080,351.67
  5. Step 5: Solve for x
    x = 15,080,351.67/5,519.01
  6. Step 6: Final answer
    x = 2,732.44

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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.