Home / 5,518.90-8,276.15-1,820.10

Finding the Fourth Proportional to 5,518.90, 8,276.15 and 1,820.10

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Solution

The fourth proportional to 5,518.90, 8,276.15 and 1,820.10 is: 2,729.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.90 : 8,276.15 = 1,820.10 : x
  2. Step 2: Convert to fraction form
    5,518.90/8,276.15 = 1,820.10/x
  3. Step 3: Cross multiply
    5,518.90x = 8,276.15 × 1,820.10
  4. Step 4: Simplify right side
    5,518.90x = 15,063,420.62
  5. Step 5: Solve for x
    x = 15,063,420.62/5,518.90
  6. Step 6: Final answer
    x = 2,729.42

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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.