Home / 5,518.90-8,279.66-1,821.03

Finding the Fourth Proportional to 5,518.90, 8,279.66 and 1,821.03

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Solution

The fourth proportional to 5,518.90, 8,279.66 and 1,821.03 is: 2,731.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.90 : 8,279.66 = 1,821.03 : x
  2. Step 2: Convert to fraction form
    5,518.90/8,279.66 = 1,821.03/x
  3. Step 3: Cross multiply
    5,518.90x = 8,279.66 × 1,821.03
  4. Step 4: Simplify right side
    5,518.90x = 15,077,509.25
  5. Step 5: Solve for x
    x = 15,077,509.25/5,518.90
  6. Step 6: Final answer
    x = 2,731.98

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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.