Home / 5,487.12-8,190.90-5,102.60

Finding the Fourth Proportional to 5,487.12, 8,190.90 and 5,102.60

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Solution

The fourth proportional to 5,487.12, 8,190.90 and 5,102.60 is: 7,616.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.12 : 8,190.90 = 5,102.60 : x
  2. Step 2: Convert to fraction form
    5,487.12/8,190.90 = 5,102.60/x
  3. Step 3: Cross multiply
    5,487.12x = 8,190.90 × 5,102.60
  4. Step 4: Simplify right side
    5,487.12x = 41,794,845.39
  5. Step 5: Solve for x
    x = 41,794,845.39/5,487.12
  6. Step 6: Final answer
    x = 7,616.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.