Home / 5,479.90-8,214.45-2,188.60

Finding the Fourth Proportional to 5,479.90, 8,214.45 and 2,188.60

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Solution

The fourth proportional to 5,479.90, 8,214.45 and 2,188.60 is: 3,280.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.90 : 8,214.45 = 2,188.60 : x
  2. Step 2: Convert to fraction form
    5,479.90/8,214.45 = 2,188.60/x
  3. Step 3: Cross multiply
    5,479.90x = 8,214.45 × 2,188.60
  4. Step 4: Simplify right side
    5,479.90x = 17,978,145.27
  5. Step 5: Solve for x
    x = 17,978,145.27/5,479.90
  6. Step 6: Final answer
    x = 3,280.74

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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.