Home / 5,385.08-8,078.70-1,922.60

Finding the Fourth Proportional to 5,385.08, 8,078.70 and 1,922.60

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Solution

The fourth proportional to 5,385.08, 8,078.70 and 1,922.60 is: 2,884.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.08 : 8,078.70 = 1,922.60 : x
  2. Step 2: Convert to fraction form
    5,385.08/8,078.70 = 1,922.60/x
  3. Step 3: Cross multiply
    5,385.08x = 8,078.70 × 1,922.60
  4. Step 4: Simplify right side
    5,385.08x = 15,532,108.62
  5. Step 5: Solve for x
    x = 15,532,108.62/5,385.08
  6. Step 6: Final answer
    x = 2,884.29

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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.