Home / 5,518.60-8,278.97-1,821.89

Finding the Fourth Proportional to 5,518.60, 8,278.97 and 1,821.89

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Solution

The fourth proportional to 5,518.60, 8,278.97 and 1,821.89 is: 2,733.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.60 : 8,278.97 = 1,821.89 : x
  2. Step 2: Convert to fraction form
    5,518.60/8,278.97 = 1,821.89/x
  3. Step 3: Cross multiply
    5,518.60x = 8,278.97 × 1,821.89
  4. Step 4: Simplify right side
    5,518.60x = 15,083,384.24
  5. Step 5: Solve for x
    x = 15,083,384.24/5,518.60
  6. Step 6: Final answer
    x = 2,733.19

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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.