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Finding the Fourth Proportional to 4,180.40, 6,270.60 and 4,115.60

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Solution

The fourth proportional to 4,180.40, 6,270.60 and 4,115.60 is: 6,173.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,180.40 : 6,270.60 = 4,115.60 : x
  2. Step 2: Convert to fraction form
    4,180.40/6,270.60 = 4,115.60/x
  3. Step 3: Cross multiply
    4,180.40x = 6,270.60 × 4,115.60
  4. Step 4: Simplify right side
    4,180.40x = 25,807,281.36
  5. Step 5: Solve for x
    x = 25,807,281.36/4,180.40
  6. Step 6: Final answer
    x = 6,173.40

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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.