Home / 5,519.40-8,278.29-1,821.48

Finding the Fourth Proportional to 5,519.40, 8,278.29 and 1,821.48

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Solution

The fourth proportional to 5,519.40, 8,278.29 and 1,821.48 is: 2,731.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,519.40 : 8,278.29 = 1,821.48 : x
  2. Step 2: Convert to fraction form
    5,519.40/8,278.29 = 1,821.48/x
  3. Step 3: Cross multiply
    5,519.40x = 8,278.29 × 1,821.48
  4. Step 4: Simplify right side
    5,519.40x = 15,078,739.67
  5. Step 5: Solve for x
    x = 15,078,739.67/5,519.40
  6. Step 6: Final answer
    x = 2,731.95

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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.