Home / 5,518.44-7,616.90-3,421.80

Finding the Fourth Proportional to 5,518.44, 7,616.90 and 3,421.80

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Solution

The fourth proportional to 5,518.44, 7,616.90 and 3,421.80 is: 4,722.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.44 : 7,616.90 = 3,421.80 : x
  2. Step 2: Convert to fraction form
    5,518.44/7,616.90 = 3,421.80/x
  3. Step 3: Cross multiply
    5,518.44x = 7,616.90 × 3,421.80
  4. Step 4: Simplify right side
    5,518.44x = 26,063,508.42
  5. Step 5: Solve for x
    x = 26,063,508.42/5,518.44
  6. Step 6: Final answer
    x = 4,722.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.