Home / 5,416.20-8,124.82-1,520.60

Finding the Fourth Proportional to 5,416.20, 8,124.82 and 1,520.60

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Solution

The fourth proportional to 5,416.20, 8,124.82 and 1,520.60 is: 2,281.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.20 : 8,124.82 = 1,520.60 : x
  2. Step 2: Convert to fraction form
    5,416.20/8,124.82 = 1,520.60/x
  3. Step 3: Cross multiply
    5,416.20x = 8,124.82 × 1,520.60
  4. Step 4: Simplify right side
    5,416.20x = 12,354,601.29
  5. Step 5: Solve for x
    x = 12,354,601.29/5,416.20
  6. Step 6: Final answer
    x = 2,281.05

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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.